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Document and Entity Information - shares	9 Months Ended
Document and Entity Information - shares	Sep. 30, 2016	Oct. 31, 2016
Document And Entity Information [Abstract]
Document Type	10-Q
Amendment Flag	false
Document Period End Date	Sep. 30, 2016
Document Fiscal Year Focus	2016
Document Fiscal Period Focus	Q3
Trading Symbol	IBP
Entity Registrant Name	INSTALLED BUILDING PRODUCTS, INC.
Entity Central Index Key	0001580905
Current Fiscal Year End Date	--12-31
Entity Filer Category	Accelerated Filer
Entity Common Stock, Shares Outstanding		31,485,525

Condensed Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Current assets
Cash	$ 19,050	$ 6,818
Accounts receivable (less allowance for doubtful accounts of $3,310 and $2,486 at September 30, 2016 and December 31, 2015, respectively)	125,058	103,198
Inventories	34,083	29,337
Other current assets	6,320	10,879
Total current assets	184,511	150,232
Property and equipment, net	65,930	57,592
Non-current assets
Goodwill	102,518	90,512
Intangibles, net	80,423	67,218
Other non-current assets	8,438	8,018
Total non-current assets	191,379	165,748
Total assets	441,820	373,572
Current liabilities
Current maturities of long-term debt	15,064	10,021
Current maturities of capital lease obligations	7,333	8,411
Accounts payable	60,007	50,867
Accrued compensation	17,464	14,488
Other current liabilities	20,206	13,635
Total current liabilities	120,074	97,422
Long-term debt	133,011	113,214
Capital lease obligations, less current maturities	9,215	12,031
Deferred income taxes	15,241	14,582
Other long-term liabilities	21,746	21,840
Total liabilities	299,287	259,089
Commitments and contingencies (Note 9)
Stockholders' equity
Preferred Stock; $0.01 par value: 5,000,000 authorized and 0 shares issued and outstanding at September 30, 2016 and December 31, 2015, respectively
Common Stock; $0.01 par value: 100,000,000 authorized, 32,135,176 and 31,982,888 issued and 31,485,525 and 31,366,328 shares outstanding at September 30, 2016 and December 31, 2015, respectively	321	320
Additional paid in capital	158,218	156,688
Accumulated deficit	(3,787)	(31,142)
Treasury Stock; at cost: 649,651 and 616,560 shares at September 30, 2016 and December 31, 2015, respectively	(12,219)	(11,383)
Total stockholders' equity	142,533	114,483
Total liabilities and stockholders' equity	$ 441,820	$ 373,572

Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Statement Of Financial Position [Abstract]
Allowance for doubtful accounts	$ 3,310	$ 2,486
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	5,000,000	5,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	100,000,000	100,000,000
Common stock, shares issued	32,135,176	31,982,888
Common stock, shares outstanding	31,485,525	31,366,328
Treasury Stock	649,651	616,560

Condensed Consolidated Statements of Operations (Unaudited) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Income Statement [Abstract]
Net revenue	$ 225,392	$ 181,579	$ 629,003	$ 471,220
Cost of sales	158,132	128,162	444,909	337,395
Gross profit	67,260	53,417	184,094	133,825
Operating expenses
Selling	13,028	10,282	36,239	27,275
Administrative	31,504	25,841	92,677	72,606
Amortization	2,889	1,817	8,178	4,091
Operating income	19,839	15,477	47,000	29,853
Other expense
Interest expense	1,544	989	4,605	2,654
Other	23	138	248	357
Non-operating (income) expense	1,567	1,127	4,853	3,011
Income before income taxes	18,272	14,350	42,147	26,842
Income tax provision	6,723	4,869	14,792	9,612
Net income attributable to common stockholders	$ 11,549	$ 9,481	$ 27,355	$ 17,230
Basic net income per share attributable to common stockholders	$ 0.37	$ 0.30	$ 0.87	$ 0.55
Diluted net income per share attributable to common stockholders	$ 0.37	$ 0.30	$ 0.87	$ 0.55
Weighted average shares outstanding:
Basic	31,323,600	31,237,275	31,294,596	31,318,682
Diluted	31,377,790	31,288,609	31,351,991	31,343,230

Condensed Consolidated Statements of Stockholders' Equity (Unaudited) - USD ($) $ in Thousands	Total	Common Stock [Member]	Additional Paid In Capital [Member]	Accumulated Deficit [Member]	Treasury Stock [Member]
BALANCE at Dec. 31, 2014	$ 91,874	$ 319	$ 154,497	$ (57,659)	$ (5,283)
BALANCE, Shares at Dec. 31, 2014		31,839,087
BALANCE, Treasury Shares at Dec. 31, 2014					(300,000)
Net income	17,230			17,230
Issuance of common stock awards to employees		$ 1	(1)
Issuance of common stock awards to employees, Shares		130,613
Surrender of common stock awards by employees, Shares					(1,560)
Share-based compensation expense	1,232		1,232
Share-based compensation issued to Directors, Value	300		300
Share-based compensation issued to Directors, Shares		13,188
Tax benefit from stock plans	76		76
Common stock repurchase, Value	(6,100)				$ (6,100)
Common stock repurchase, Shares					(315,000)
BALANCE at Sep. 30, 2015	104,612	$ 320	156,104	(40,429)	$ (11,383)
BALANCE, Shares at Sep. 30, 2015		31,982,888
BALANCE, Treasury Shares at Sep. 30, 2015					(616,560)
BALANCE at Dec. 31, 2015	$ 114,483	$ 320	156,688	(31,142)	$ (11,383)
BALANCE, Shares at Dec. 31, 2015	31,982,888	31,982,888
BALANCE, Treasury Shares at Dec. 31, 2015	(616,560)				(616,560)
Net income	$ 27,355			27,355
Issuance of common stock awards to employees		$ 1	(1)
Issuance of common stock awards to employees, Shares		143,528
Surrender of common stock awards by employees, Value	(836)				$ (836)
Surrender of common stock awards by employees, Shares					(33,091)
Share-based compensation expense	1,231		1,231
Share-based compensation issued to Directors, Value	300		300
Share-based compensation issued to Directors, Shares		8,760
BALANCE at Sep. 30, 2016	$ 142,533	$ 321	$ 158,218	$ (3,787)	$ (12,219)
BALANCE, Shares at Sep. 30, 2016	32,135,176	32,135,176
BALANCE, Treasury Shares at Sep. 30, 2016	(649,651)				(649,651)

Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Cash flows from operating activities
Net income	$ 27,355	$ 17,230
Adjustments to reconcile net income to net cash provided by operating activities
Depreciation and amortization of property and equipment	17,240	11,872
Amortization of intangibles	8,178	4,091
Amortization of deferred financing costs and debt discount	282	199
Provision for doubtful accounts	1,960	1,551
Write-off of debt issuance costs	286
Gain on sale of property and equipment	(218)	(247)
Noncash stock compensation	1,531	1,532
Deferred income taxes	708	107
Changes in assets and liabilities, excluding effects of acquisitions
Accounts receivable	(17,878)	(16,405)
Inventories	(3,158)	(2,960)
Other assets	4,727	5,265
Accounts payable	3,879	5,777
Income taxes payable	3,652	1,918
Other liabilities	6,033	(819)
Net cash provided by operating activities	54,577	29,111
Cash flows from investing activities
Purchases of property and equipment	(19,169)	(19,959)
Acquisitions of businesses, net of cash acquired of $0 and $924, respectively	(36,427)	(71,040)
Proceeds from sale of property and equipment	523	448
Other		(420)
Net cash used in investing activities	(55,073)	(90,971)
Cash flows from financing activities
Proceeds from revolving line of credit under credit agreement applicable to respective period (Note 4)	37,975	130,800
Payments on revolving line of credit under credit agreement applicable to respective period (Note 4)	(37,975)	(130,800)
Proceeds from term loan under credit agreement applicable to respective period (Note 4)	100,000	50,000
Payments on term loan under credit agreement applicable to respective period (Note 4)	(50,625)	(24,688)
Proceeds from delayed draw term loan under credit agreement applicable to respective period (Note 4)	12,500	35,000
Payments on delayed draw term loan under credit agreement applicable to respective period (Note 4)	(50,000)
Proceeds from vehicle and equipment notes payable	16,310	12,817
Debt issuance costs	(1,238)	(758)
Principal payments on long term debt	(4,055)	(2,631)
Principal payments on capital lease obligations	(6,596)	(7,276)
Acquisition-related obligations	(2,732)
Repurchase of common stock		(6,100)
Surrender of common stock by employees	(836)
Net cash provided by financing activities	12,728	56,364
Net change in cash	12,232	(5,496)
Cash at beginning of period	6,818	10,761
Cash at end of period	19,050	5,265
Supplemental disclosures of cash flow information Net cash paid during the period for:
Interest	3,904	2,171
Income taxes, net of refunds	10,428	8,327
Supplemental disclosure of noncash investing and financing activities
Vehicles capitalized under capital leases and related lease obligations	2,956	2,750
Seller obligations in connection with acquisition of businesses	2,849	$ 12,364
Unpaid purchases of property and equipment included in accounts payable	$ 2,140

Condensed Consolidated Statements of Cash Flows (Unaudited) (Parenthetical) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Statement Of Cash Flows [Abstract]
Cash acquired, Net	$ 0	$ 924

Organization

9 Months Ended

Sep. 30, 2016

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Organization

NOTE 1 – ORGANIZATION

Installed Building Products, Inc. (“IBP”), a Delaware corporation formed on October 28, 2011, and its subsidiaries (collectively referred to as the “Company” and “we”, “us” and “our”) primarily install insulation, garage doors, rain gutters, shower doors, closet shelving and mirrors, and other products for residential and commercial builders located in the continental United States. IBP operates in over 100 locations within the continental United States and its corporate office is located in Columbus, Ohio.

We have one operating segment and a single reportable segment. Substantially all of our sales come from service-based installation of various products in the residential new construction and repair and remodel and commercial construction end markets. Each of our branches has the capacity to serve all of our end markets. The following table sets forth the percentage of our net revenue by end market:

	Three months ended September 30,						Nine months ended September 30,
	2016			2015			2016			2015
Residential new construction and repair and remodel		89	%		89	%		88	%		89	%
Commercial construction		11	%		11	%		12	%		11	%
		100	%		100	%		100	%		100	%

Significant Accounting Policies	9 Months Ended
Significant Accounting Policies	Sep. 30, 2016
Accounting Policies [Abstract]
Significant Accounting Policies	NOTE 2 – SIGNIFICANT ACCOUNTING POLICIES Basis of Presentation and Principles of Consolidation The accompanying condensed consolidated financial statements include all of our wholly owned subsidiaries and majority owned subsidiaries. The non-controlling interest relating to majority owned subsidiaries is not significant for presentation. All intercompany accounts and transactions have been eliminated. The information furnished in the condensed consolidated financial statements includes normal recurring adjustments and reflects all adjustments which are, in the opinion of management, necessary for a fair presentation of the results of operations and statements of financial position for the interim periods presented. Certain information and footnote disclosures normally included in the consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and the rules and regulations of the Securities and Exchange Commission (the “SEC”) have been condensed or omitted pursuant to such rules and regulations. We believe that the disclosures are adequate to prevent the information presented from being misleading when read in conjunction with our consolidated financial statements and the notes thereto included in Part II, Item 8, Financial Statements and Supplementary Data, of our Annual Report on Form 10-K for the fiscal year ended December 31, 2015 (the “2015 Form 10-K”), as filed with the SEC on March 9, 2016. The December 31, 2015 condensed consolidated balance sheet data was derived from the audited financial statements but does not include all disclosures required by U.S. GAAP. Our interim operating results for the three and nine months ended September 30, 2016 are not necessarily indicative of the results to be expected in future operating quarters. See Part I, Item 1A. Risk Factors in our 2015 Form 10-K and Part II, Item 1A. Risk Factors in our Quarterly Reports on Form 10-Q for the periods ended June 30, 2016 and September 30, 2016 for additional information regarding risk factors that may impact our results. Note 2 to the consolidated financial statements in our 2015 Form 10-K describes the significant accounting policies and estimates used in preparation of the consolidated financial statements. There have been no changes to our significant accounting policies or estimates during the three or nine months ended September 30, 2016. Use of Estimates Preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates include the allowance for doubtful accounts, valuation allowance on deferred tax assets, valuation of the reporting unit, intangible assets and other long-lived assets, share-based compensation, reserves for general liability, and workers’ compensation and medical insurances. Management believes the accounting estimates are appropriate and reasonably determined; however, due to the inherent uncertainties in making these estimates, actual amounts could differ from such estimates. Advertising Costs Advertising costs are expensed as incurred. Advertising expense was approximately $0.8 million and $2.2 million for the three and nine months ended September 30, 2016, respectively, and $0.6 million and $1.6 million for the three and nine months ended September 30, 2015, respectively, and is included in selling expense on the Condensed Consolidated Statements of Operations. Recently Adopted Accounting Pronouncements In April 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2015-03, “Simplifying the Presentation of Debt Issuance Costs.” Under this ASU, we present debt issuance costs in the balance sheet as a reduction from the related debt liability rather than as an asset. Amortization of such costs will continue to be reported as interest expense. During the nine months ended September 30, 2016, we retrospectively adopted ASU 2015-03, which resulted in a reclassification of $0.5 million of debt issuance costs related to our long-term debt from other non-current assets to long-term debt as of December 31, 2015. In April 2015, the FASB issued ASU 2015-05, “Intangibles–Goodwill and Other–Internal-Use Software (Subtopic 350-40): Customer's Accounting for Fees Paid in a Cloud Computing Arrangement.” This update provides criteria for customers in a cloud computing arrangement to determine whether the arrangement includes a license of software. We adopted this guidance effective January 1, 2016 and have determined this ASU did not have a material impact on our condensed consolidated financial statements. In August 2015, the FASB issued ASU 2015-15, “Imputation of Interest (Subtopic 835-30).” This ASU amends ASU 2015-03 regarding the presentation and subsequent measurement of debt issuance costs related to line of credit arrangements. Specifically, it provides guidance for deferring and presenting debt issuance costs as an asset and subsequently amortizing the deferred debt issuance costs ratably over the term of the line of credit arrangement, regardless of whether there are any outstanding borrowings on the line of credit arrangement. We adopted this guidance effective January 1, 2016 and have determined this ASU did not have a material impact on our condensed consolidated financial statements. After applying the new guidance, deferred debt issuance costs, net of accumulated amortization, were $1.3 million and $0.6 million as September 30, 2016 and December 31, 2015, respectively. In September 2015, the FASB issued ASU 2015-16, “Business Combinations (Topic 805).” This ASU requires an acquirer to retrospectively adjust provisional amounts recognized in a business combination during the measurement period. To simplify the accounting for adjustments made to provisional amounts, the amendments in this update require that the acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amount is determined. The acquirer is required to also record, in the same period’s financial statements, the effect on earnings of changes in depreciation, amortization or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. In addition, an entity is required to present separately on the face of the income statement or disclose in the notes to the financial statements the portion of the amount recorded in current period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. For public business entities, this update is effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. While previous adjustments to provisional amounts did not have a material impact on our condensed consolidated financial statements, it is possible that future adjustments made during measurement periods to recently acquired entities or entities acquired in the future could have a material impact on our condensed consolidated financial statements. In March 2016, the FASB issued ASU No. 2016-09, “Compensation-Stock Compensation (Topic 718).” This update amends the accounting for forfeitures, employer tax withholding on share-based compensation and the financial statement presentation of excess tax benefits or deficiencies. This ASU also clarifies the statement of cash flows presentation for certain components of share-based awards. As early adoption is permitted, we adopted this standard effective January 1, 2016 and have concluded that it did not have a material impact on our condensed consolidated financial statements. Under ASU 2016-09, we classify the excess income tax benefits from stock-based compensation arrangements as a discrete item within income tax expense, rather than recognizing such excess income tax benefits in additional paid-in capital. Excess income tax benefits from stock-based compensation arrangements are classified as an operating activity rather than as a financing activity. In addition, when we withhold shares from an employee’s vesting of common stock awards to fund payment by us of the employee’s taxes, the payment is classified as a financing activity. We have elected to continue to estimate the forfeitures expected to occur to determine the amount of compensation cost to be recognized in each period. Recently Issued Accounting Pronouncements Not Yet Adopted In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606).” ASU 2014-09 sets forth a new revenue recognition model that requires identifying the contract(s) with a customer, identifying the performance obligations in the contract, determining the transaction price, allocating the transaction price to the performance obligations and recognizing the revenue upon satisfaction of performance obligations. In July 2015, the FASB voted to defer the application of the provisions of this standard for public companies until annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. We are still evaluating whether this ASU will have a material impact on our condensed consolidated financial statements. In July 2015, the FASB issued ASU 2015-11, “Inventory (Topic 330).” This update requires an entity to measure inventory within the scope of the update at the lower of cost and net realizable value. For public business entities, this update is effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. We are still evaluating whether this ASU will have a material impact on our condensed consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” This update amends the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets and making targeted changes to lessor accounting. ASU 2016-02 requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. For public business entities, this update is effective for annual reporting periods beginning after December 15, 2018, including interim periods within those fiscal years, and early adoption is permitted as of the standard’s issuance date. We are still evaluating whether this ASU will have a material impact on our condensed consolidated financial statements. In March 2016, the FASB issued ASU 2016-06, “Derivatives and Hedging (Topic 815): Contingent Put and Call Options in Debt Instruments.” This ASU clarifies the requirement for assessing whether contingent call (put) options that can accelerate the payment of principal on debt instruments are clearly and closely related to their debt hosts. An entity performing the assessment under this amendment is required to assess the embedded call (put) options solely in accordance with the four-step decision sequence. Consequently, when a call (put) option is contingently exercisable, an entity does not have to assess whether the event that triggers the ability to exercise a call (put) option is related to interest rates or credit risks. For public business entities, this update is effective for financial statements issued for fiscal years beginning after December 15, 2016 and interim periods within those fiscal years. We are still evaluating whether this ASU will have a material impact on our condensed consolidated financial statements. In April 2016, the FASB issued ASU No. 2016-10, “Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing,” which provides supplemental adoption guidance and clarification to ASU 2014-09. ASU 2016-10 must be adopted concurrently with the adoption of ASU 2014-09. We are still evaluating whether the future adoption of these pronouncements will have a material impact on our condensed consolidated financial statements. In May 2016, the FASB issued ASU No. 2016-11, “Revenue Recognition (Topic 605) and Derivatives and Hedging (Topic 815): Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-16 pursuant to Staff announcements at the March 3, 2016 EITF Meeting” This ASU rescinds from the FASB Accounting Standards Codification certain SEC paragraphs as a result of two SEC Staff Announcements at the March 3, 2016 meeting. For public entities, the amendments related to Topic 605 are effective for interim and annual reporting periods beginning after December 15, 2017 and amendments related to Topic 815 are effective for interim and annual reporting periods beginning after December 15, 2015. We are still evaluating whether the portion of this ASU related to Topic 605 will have a material impact on our condensed consolidated financial statements but have concluded that the portion of this ASU related to Topic 815 is not applicable and, therefore, did not have a material impact on our condensed consolidated financial statements. In May 2016, the FASB issued ASU 2016-12, “Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients.” The amendments in this ASU provide additional clarification and implementation guidance on the previously issued ASU 2014-09. This ASU provides clarification to Topic 606 on how to assess collectability, present sales tax, treat noncash consideration, and account for completed and modified contracts at the time of transition. The amendment also clarifies that an entity retrospectively applying the guidance in Topic 606 is not required to disclose the effect of the accounting change in the period of adoption. The effective date and transition requirements for these amendments are the same as the effective date and transition requirements of ASU 2014-09, which is effective for fiscal years, and for interim periods within those years, beginning after December 15, 2017. We are still evaluating whether this ASU will have a material impact on our condensed consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” This ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. In addition, these amendments require the measurement of all expected credit losses for financial assets, including trade accounts receivable, held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. For public business entities, this update is effective for financial statements issued for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. We are still evaluating whether this ASU will have a material impact on our condensed consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows: Clarification of Certain Cash Receipts and Cash Payments (Topic 230).” This ASU addresses the diversity in practice related to the classification of certain cash receipts and payments in the statement of cash flows by adding or clarifying guidance on eight specific cash flow issues. For public business entities, this update is effective for financial statements issued for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. We are still evaluating whether this ASU will have a material impact on our condensed consolidated financial statements. In October 2016, the FASB issued ASU 2016-16, “Income Taxes (Topic 740): intra-entity transfers of assets other than inventory.” This ASU aligns the recognition of income tax consequences for intra-entity transfers of assets other than inventory with International Financial Reporting Standards (IFRS). For public business entities, this update is effective for financial statements issued for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. We are still evaluating whether this ASU will have a material impact on our condensed consolidated financial statements.

Goodwill and Intangibles

9 Months Ended

Sep. 30, 2016

Goodwill And Intangible Assets Disclosure [Abstract]

Goodwill and Intangibles

NOTE 3 – GOODWILL AND INTANGIBLES

Goodwill

The change in carrying amount of goodwill was as follows (in thousands):

	Goodwill (Gross)		Accumulated Impairment Losses			Goodwill (Net)
January 1, 2016	$	160,516	$	(70,004	)	$	90,512
Business Combinations		12,006		—			12,006
September 30, 2016	$	172,522	$	(70,004	)	$	102,518

We test goodwill for impairment annually during the fourth quarter of our fiscal year or earlier if there is an impairment indicator. No impairment was recognized during either of the nine month periods ended September 30, 2016 and 2015.

Intangibles, net

The following table provides the gross carrying amount and accumulated amortization for each major class of intangibles (in thousands):

	As of September 30, 2016						As of December 31, 2015
	Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Net Book Value
Amortized intangibles:
Customer relationships	$	75,261	$	25,562	$	49,699	$	62,399	$	20,231	$	42,168
Covenants not-to-compete		8,143		2,003		6,140		5,729		847		4,882
Trademarks and tradenames		34,436		9,852		24,584		28,320		8,152		20,168
	$	117,840	$	37,417	$	80,423	$	96,448	$	29,230	$	67,218

The gross carrying amount of intangibles increased approximately $21.4 million during the nine months ended September 30, 2016 primarily due to business combinations. See Note 10, Business Combinations, for more information. Remaining estimated aggregate annual amortization expense is as follows (amounts, in thousands, are for the fiscal year ended):

Remainder of 2016	$	2,859
2017		11,045
2018		10,741
2019		10,229
2020		9,622
Thereafter		35,927

- Definition

The entire disclosure for the aggregate amount of goodwill and a description of intangible assets, which may include (a) for amortizable intangible assets (also referred to as finite-lived intangible assets), the carrying amount, the amount of any significant residual value, and the weighted-average amortization period, (b) for intangible assets not subject to amortization (also referred to as indefinite-lived intangible assets), the carrying amount, and (c) the amount of research and development assets acquired and written off in the period, including the line item in the income statement in which the amounts written off are aggregated, if not readily apparent from the income statement. Also discloses (a) for amortizable intangibles assets in total and by major class, the gross carrying amount and accumulated amortization, the total amortization expense for the period, and the estimated aggregate amortization expense for each of the five succeeding fiscal years, (b) for intangible assets not subject to amortization the carrying amount in total and by major class, and (c) for goodwill, in total and for each reportable segment, the changes in the carrying amount of goodwill during the period (including the aggregate amount of goodwill acquired, the aggregate amount of impairment losses recognized, and the amount of goodwill included in the gain (loss) on disposal of a reporting unit). If any part of goodwill has not been allocated to a reportable segment, discloses the unallocated amount and the reasons for not allocating. For each impairment loss recognized related to an intangible asset (excluding goodwill), discloses: (a) a description of the impaired intangible asset and the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method for determining fair value, (c) the caption in the income statement or the statement of activities in which the impairment loss is aggregated, and (d) the segment in which the impaired intangible asset is reported. For each goodwill impairment loss recognized, discloses: (a) a description of the facts and circumstances leading to the impairment, (b) the amount of the impairment loss and the method of determining the fair value of the associated reporting unit, and (c) if a recognized impairment loss is an estimate not finalized and the reasons why the estimate is not final. May also disclose the nature and amount of any significant adjustments made to a previous estimate of an impairment loss.

+ References + Details

Long-Term Debt

9 Months Ended

Sep. 30, 2016

Debt Disclosure [Abstract]

Long-Term Debt

NOTE 4 – LONG-TERM DEBT

Debt consisted of the following (in thousands):

	As of September 30,			As of December 31,
	2016			2015
Term loans, as amended, net of unamortized debt discount of $477 and $249, respectively	$	97,030		$	47,876
Delayed draw term loans, as amended, net of unamortized debt discount of $50 and $261, respectively		12,443			49,739
Vehicle and equipment notes, maturing through September 2021; payable in various monthly installments, including interest rates ranging from 2% to 4%		33,414			21,091
Various notes payable, maturing through March 2025; payable in various monthly installments, including interest rates ranging from 4% to 6%		5,188			4,529
		148,075			123,235
Less: current maturities		(15,064	)		(10,021	)
Long-term debt, less current maturities	$	133,011		$	113,214

On February 29, 2016, we entered into a Credit and Security Agreement (the “Credit and Security Agreement”) with the lenders named therein. The Credit and Security Agreement amended and restated our previous credit agreement (the “2015 Credit Agreement”), which was scheduled to mature in April 2020. We used a portion of the funds from the Credit and Security Agreement to pay off the outstanding balances under the 2015 Credit Agreement. The Credit and Security Agreement provides for a five-year senior secured credit facility in an aggregate principal amount of up to $325.0 million, consisting of a $100.0 million revolving line of credit (the “Revolving LOC”), a $100.0 million term loan (the “Term Loan”), and a delayed draw term loan facility (the “DDTL”) providing for up to $125.0 million in additional term loan draws during the first year of the Credit and Security Agreement. Under the Revolving LOC, up to an aggregate of $20.0 million is available to us for the issuance of letters of credit and up to an aggregate of $5.0 million is available to us for swing line loans. The Credit and Security Agreement also includes an accordion feature which allows us, at our option but subject to lender and certain other approvals, to add up to an aggregate of $75.0 million in principal amount of term loans or additional revolving credit commitments, subject to the same terms as the Revolving LOC and Term Loan. As of September 30, 2016, there were approximately $18.0 million in letters of credit issued and no borrowings outstanding under the Revolving LOC. All of the obligations under the Credit and Security Agreement are guaranteed by our material domestic subsidiaries, other than Suburban Insulation, Inc.

Loans under the Credit and Security Agreement bear interest at either the eurodollar rate (“LIBOR”) or the base rate (which approximates prime rate), at our election, plus a margin based on the type of rate applied and our leverage ratio. At December 31, 2015, the outstanding balances on the term loan and the delayed draw term loan under the 2015 Credit Agreement bore interest at 1-month LIBOR, including margin (1.95%), and the outstanding balances on the Term Loan and DDTL at September 30, 2016 bore interest at 1-month LIBOR, including margin (2.31%). In addition to interest, we are required to pay commitment fees on the unused portion of the Revolving LOC. The commitment fee rate for the period from February 29, 2016 through August 31, 2016, was 22.5 basis points. The commitment fee rate, like the interest rate spreads, is subject to adjustment with possible future commitment fees ranging from 20 to 30 basis points per annum. At September 30, 2016, our applicable commitment fee rate was 22.5 basis points. We are also required to pay a ticking fee of 37.5 basis points per annum on the unused portion of the DDTL until it is fully drawn or February 28, 2017, whichever is earlier. Any outstanding principal balances on the Term Loan and DDTL are due on February 28, 2021 (the “Maturity Date”).

The Credit and Security Agreement contains covenants that require us to (1) maintain a fixed charge coverage ratio of not less than 1.10 to 1.0 and (2) maintain a leverage ratio of no greater than: (a) 3.50 to 1.00 through December 30, 2016; (b) 3.25 to 1.00 on December 31, 2016 through June 29, 2017; (c) 3.00 to 1.00 on June 30, 2017 through December 30, 2017; (d) 2.75 to 1.00 on December 31, 2017 through June 29, 2018; and (e) 2.50 to 1.00 on June 30, 2018 and thereafter. The Credit and Security Agreement also contains various restrictive non-financial covenants and a provision that, upon an event of default (as defined by the Credit and Security Agreement), amounts outstanding under the Credit and Security Agreement would bear interest at the rate as determined above plus 2.0% per annum.

Vehicle and Equipment Notes

We are party to a Master Loan and Security Agreement (“Master Loan and Security Agreement”), a Master Equipment Lease Agreement (“Master Equipment Agreement”) and one or more Master Loan Agreements (“Master Loan Agreements”) with various lenders to provide financing for the purpose of purchasing or leasing vehicles and equipment used in the normal course of business. Each financing arrangement under these agreements constitutes a separate note and obligation. Vehicles and equipment purchased or leased under each financing arrangement serve as collateral for the note applicable to such financing arrangement. Regular payments are due under each note for a period of typically 60 consecutive months after the incurrence of the obligation. The specific terms of each note are based on specific criteria, including the type of vehicle or equipment and the market interest rates at the time. No termination date applies to these agreements.

Total gross assets relating to our master loan and equipment agreements were $43.5 million and $25.4 million as of September 30, 2016 and December 31, 2015, respectively, none of which were fully depreciated as of September 30, 2016 or December 31, 2015, respectively. The net book value of assets under these agreements was $35.2 million and $22.4 million as of September 30, 2016 and December 31, 2015, respectively. Depreciation of assets held under these agreements is included within cost of sales on the Condensed Consolidated Statements of Operations.

Fair Value Measurements	9 Months Ended
Fair Value Measurements	Sep. 30, 2016
Fair Value Disclosures [Abstract]
Fair Value Measurements	NOTE 5 – FAIR VALUE MEASUREMENTS Fair Values Fair value is the price that would be received for an asset or paid to transfer a liability (an exit price) in the principal or most advantageous market for the asset or liability in an orderly transaction between market participants on the measurement date. Accounting Standards Codification (“ASC”) 820, “Fair Value Measurement,” establishes a fair value hierarchy that requires an entity to maximize the use of observable inputs and minimize the use of unobservable inputs when measuring fair value. The standard describes three levels of inputs that may be used to measure fair value: Level 1: Quoted prices (unadjusted) for identical assets or liabilities in active markets that the entity has the ability to access as of the measurement date. Level 2: Significant other observable inputs other than Level 1 prices such as quoted prices for similar assets or liabilities; quoted prices in markets that are not active; or other inputs that are observable or can be corroborated by observable market data. Level 3: Significant unobservable inputs that reflect a reporting entity’s own assumptions about the assumptions that market participants would use in pricing an asset or liability. Estimated Fair Value of Financial Instruments Accounts receivable, accounts payable and accrued liabilities as of September 30, 2016 and December 31, 2015 approximate fair value due to the short-term maturities of these financial instruments. The carrying amounts of the long-term debt, including the Term Loan, DDTL and Revolving LOC, approximate fair value as of September 30, 2016 and December 31, 2015 due to the short term maturities of the underlying variable rate LIBOR agreements. The carrying amounts of the obligations associated with our vehicle and equipment notes approximate fair value as of September 30, 2016 and December 31, 2015 because the associated assets generate sufficient cash through operations to settle the obligations. All debt classifications represent Level 2 fair value measurements.

- Definition

The entire disclosure for the fair value of financial instruments (as defined), including financial assets and financial liabilities (collectively, as defined), and the measurements of those instruments as well as disclosures related to the fair value of non-financial assets and liabilities. Such disclosures about the financial instruments, assets, and liabilities would include: (1) the fair value of the required items together with their carrying amounts (as appropriate); (2) for items for which it is not practicable to estimate fair value, disclosure would include: (a) information pertinent to estimating fair value (including, carrying amount, effective interest rate, and maturity, and (b) the reasons why it is not practicable to estimate fair value; (3) significant concentrations of credit risk including: (a) information about the activity, region, or economic characteristics identifying a concentration, (b) the maximum amount of loss the entity is exposed to based on the gross fair value of the related item, (c) policy for requiring collateral or other security and information as to accessing such collateral or security, and (d) the nature and brief description of such collateral or security; (4) quantitative information about market risks and how such risks are managed; (5) for items measured on both a recurring and nonrecurring basis information regarding the inputs used to develop the fair value measurement; and (6) for items presented in the financial statement for which fair value measurement is elected: (a) information necessary to understand the reasons for the election, (b) discussion of the effect of fair value changes on earnings, (c) a description of [similar groups] items for which the election is made and the relation thereof to the balance sheet, the aggregate carrying value of items included in the balance sheet that are not eligible for the election; (7) all other required (as defined) and desired information.

+ References + Details

Employee Benefits

9 Months Ended

Sep. 30, 2016

Postemployment Benefits [Abstract]

Employee Benefits

NOTE 6 – EMPLOYEE BENEFITS

Healthcare

Our healthcare benefit expense (net of employee contributions) for all plans was approximately $3.7 million and $3.0 million for the three months ended September 30, 2016 and 2015, respectively, and $11.4 million and $8.9 million for the nine months ended September 30, 2016 and 2015, respectively, and is included in administrative expenses on our Condensed Consolidated Statements of Operations. An accrual for estimated healthcare claims incurred but not reported (“IBNR”) is included within accrued compensation on the Condensed Consolidated Balance Sheets and was $1.6 million and $1.5 million as of September 30, 2016 and December 31, 2015, respectively.

Workers’ Compensation

Workers’ compensation expense totaled $3.4 million and $2.6 million for the three months ended September 30, 2016 and 2015, respectively, and $9.2 million and $6.6 million for the nine months ended September 30, 2016 and 2015, respectively, and is included in costs of sales on our Condensed Consolidated Statements of Operations. Workers’ compensation known claims and IBNR reserves included on the Condensed Consolidated Balance Sheets were as follows (in thousands):

	September 30,		December 31,
	2016		2015
Included in other current liabilities	$	4,033	$	3,263
Included in other long-term liabilities		7,503		7,132
	$	11,536	$	10,395

We also had an insurance receivable for claims that exceeded the stop loss limit included on the Condensed Consolidated Balance Sheets. That receivable offsets an equal liability included within the reserve amounts noted above and was as follows (in thousands):

	September 30,		December 31,
	2016		2015
Included in other non-current assets	$	1,256	$	1,542

Share-Based Compensation

Directors

During the nine months ended September 30, 2016 and 2015, we granted approximately 9 thousand and 13 thousand shares of our common stock, respectively, under our 2014 Omnibus Incentive Plan to non-employee members of our Board of Directors. Accordingly, for the nine months ended September 30, 2016 and 2015, we recorded $0.3 million in compensation expense within administrative expenses on the Condensed Consolidated Statements of Operations. These shares effectively vested on the grant date since there is deemed to be no service period associated with these awards. The lack of a vesting or service period may not apply to any future share grants under our 2014 Omnibus Incentive Plan.

Employees

During the nine months ended September 30, 2016, we granted approximately 0.1 million shares of our common stock under our 2014 Omnibus Incentive Plan to our employees, which vest in three equal installments (rounded to the nearest whole share) on each of April 20, 2017, April 20, 2018 and April 20, 2019.

During the nine months ended September 30, 2016, our employees surrendered approximately 32 thousand shares of our common stock to satisfy tax withholding obligations arising in connection with the vesting of such common stock awards previously issued under our 2014 Omnibus Incentive Plan. Share-based compensation expense was $0.4 million and $1.2 million for the three and nine months ended September 30, 2016, respectively. We recognized excess tax benefits of approximately $0.3 million within administrative expenses on the Condensed Consolidated Statements of Operations for the nine months ended September 30, 2016. We did not recognize any such excess tax benefits in the three months ended September 30, 2016.

During the nine months ended September 30, 2015, we granted approximately 0.1 million shares of our common stock under our 2014 Omnibus Incentive Plan to our employees. Shares issued to non-executive employees vested 100% between January 7, 2016 and March 31, 2016, and shares issued to certain officers vest(ed) in three equal installments (rounded to the nearest whole share) on each of March 31, 2016, March 31, 2017 and March 31, 2018. Share-based compensation expense was $0.6 million and $1.2 million for the three and nine months ended September 30, 2015.

Nonvested common stock awards for employees as of December 31, 2015 and changes during the nine months ended September 30, 2016 were as follows:

	Common Stock Awards			Weighted Average Grant Date Fair Market Value Per Share
Nonvested common stock awards at December 31, 2015		129,053		$	21.52
Granted		143,528			26.98
Vested		(109,473	)		21.48
Forfeited		(1,183	)		24.97
Nonvested common stock awards at September 30, 2016		161,925		$	26.37

As of September 30, 2016, there was $3.4 million of unrecognized compensation expense related to nonvested common stock awards. This expense is subject to future adjustments for forfeitures and is expected to be recognized on a straight-line basis over the remaining weighted-average period of 2.5 years. Shares forfeited are returned as treasury shares and available for future issuances.

As of September 30, 2016, approximately 2.7 million shares of common stock were available for issuance under the 2014 Omnibus Incentive Plan.

Income Taxes	9 Months Ended
Income Taxes	Sep. 30, 2016
Income Tax Disclosure [Abstract]
Income Taxes	NOTE 7 – INCOME TAXES Our provision for income taxes as a percentage of pretax earnings (“effective tax rate”) is based on a current estimate of the annual effective income tax rate adjusted to reflect the impact of discrete items. During the three and nine months ended September 30, 2016, the effective tax rate was 36.8 percent and 35.1 percent, respectively. These rates were favorably impacted by deductions related to domestic production activities, early adoption of ASU 2016-09 and the release of a valuation allowance due to utilization of net operating losses. The rates were partially offset by separate tax filing entities in a loss position for which a full valuation allowance will be accounted for against the losses, causing no tax benefit to be recognized on the losses. On March 30, 2016, the FASB issued ASU 2016-09 which simplified several aspects of the accounting for employee share-based payment transactions. We decided to early adopt ASU 2016-09 and per its guidance recognized $0.3 million of excess income tax benefits from stock-based compensation arrangements as a discrete item within income tax expense for the nine months ended September 30, 2016. We did not recognize any excess income tax benefits related to the adoption of ASU 2016-09 during the three months ended September 30, 2016.

Related Party Transactions

9 Months Ended

Sep. 30, 2016

Related Party Transactions

NOTE 8 – RELATED PARTY TRANSACTIONS

We sell installation services to other companies related to us through common or affiliated ownership and/or Board of Directors and/or management relationships. We also purchase services and materials and pay rent to companies with common or related ownership.

We lease our headquarters and certain other facilities from related parties. See Note 9, Commitments and Contingencies, for future minimum lease payments to be paid to these related parties.

For the three and nine months ended September 30, 2016 and 2015, the amount of sales to related parties as well as the purchases from and rent expense paid to related parties were as follows (in thousands):

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
Sales	$	2,182	$	1,924	$	5,282	$	4,661
Purchases		114		80		370		366
Rent		163		150		472		446

As of September 30, 2016 and December 31, 2015, we had related party balances of approximately $1.4 million and $1.8 million, respectively, included in accounts receivable on our Condensed Consolidated Balance Sheets. These balances represent trade accounts receivable arising during normal course of business with various related parties. M/I Homes, Inc., a customer whose Chairman, President and Chief Executive Officer is a member of our Board of Directors, accounted for $0.8 million and $1.0 million of these balances as of September 30, 2016 and December 31, 2015, respectively.

On March 13, 2015, we entered into a share repurchase agreement with Installed Building Systems, Inc. (“IBS”), a related party, for the purchase of approximately 0.3 million shares of our common stock for a purchase price of approximately $6.1 million (or $19.23 per share, which represented a 7.5% discount to the last reported price of our common stock on March 13, 2015).

Commitments and Contingencies

9 Months Ended

Sep. 30, 2016

Commitments And Contingencies Disclosure [Abstract]

Commitments and Contingencies

NOTE 9 – COMMITMENTS AND CONTINGENCIES

Accrued General Liability

Accrued general insurance reserves included on the Condensed Consolidated Balance Sheets were as follows (in thousands):

	September 30, 2016		December 31, 2015
Included in other current liabilities	$	1,667	$	1,304
Included in other long-term liabilities		8,514		6,879
	$	10,181	$	8,183

We also had general liability insurance receivables included on the Condensed Consolidated Balance Sheets that, in aggregate, offset an equal liability included within the reserve amounts noted above. The amounts were as follows (in thousands):

	September 30, 2016		December 31, 2015
General liability insurance receivable and indemnification asset for claims under a fully insured policy	$	2,815	$	2,815
General liability insurance receivable for claims that exceeded the stop loss limit		907		821
Total general liability insurance receivables included in other non-current assets	$	3,722	$	3,636

Leases

We are obligated under capital leases covering vehicles and certain equipment. The vehicle and equipment leases generally have terms ranging from four to six years. Total gross assets relating to capital leases were approximately $64.7 million and $64.9 million as of September 30, 2016 and December 31, 2015, respectively, and a total of approximately $23.1 million and $19.1 million were fully depreciated as of September 30, 2016 and December 31, 2015, respectively. The net book value of assets under capital leases was approximately $17.8 million and $22.1 million as of September 30, 2016 and December 31, 2015, respectively, net of accumulated depreciation of $46.9 million and $42.8 million as of September 30, 2016 and December 31, 2015, respectively. Amortization of assets held under capital leases is included within cost of sales on the Condensed Consolidated Statements of Operations.

We also have several noncancellable operating leases, primarily for buildings, improvements, equipment, and certain vehicles. These leases generally contain renewal options for periods ranging from one to five years and require us to pay all executory costs such as property taxes, maintenance and insurance.

In some instances, lease agreements exist with related parties. Future minimum lease payments under noncancellable operating leases (with initial or remaining lease terms in excess of one year) with related parties as of September 30, 2016 are as follows (amounts, in thousands, are as of the fiscal year ended):

Remainder of 2016	$	133
2017		366
2018		155
2019		—
2020		—
Thereafter		—

Supply Contract Commitments

As of September 30, 2016, we had two product supply contracts, one extending through December 31, 2016 and one extending through August 31, 2017. The contract extending through August 31, 2017 has been suspended through December 31, 2016. Our obligations for both contracts are based on quantity without a specific rate applied and therefore are not quantifiable. We expect our quantity of purchases to exceed the minimum quantity commitments for all years covered by the contracts. Actual purchases made under the contract extending through December 31, 2016 for the three months ended September 30, 2016 and 2015 were approximately $6.5 million and $16.6 million, respectively, and $32.9 million and $41.5 million for the nine months ended September 30, 2016 and 2015, respectively.

Other Commitments and Contingencies

From time to time, various claims and litigation are asserted or commenced against us principally arising from contractual and tort matters and personnel and employment disputes. In determining loss contingencies, management considers the likelihood of loss as well as the ability to reasonably estimate the amount of such loss or liability. An estimated loss is recorded when it is considered probable that such a liability has been incurred and when the amount of loss can be reasonably estimated. As litigation is subject to inherent uncertainties, we cannot be certain that we will prevail in these matters. However, we do not believe that the ultimate outcome of any pending matters will have a material adverse effect on our consolidated financial position, results of operations or cash flows.

Business Combinations

9 Months Ended

Sep. 30, 2016

Business Combinations [Abstract]

Business Combinations

NOTE 10 – BUSINESS COMBINATIONS

As part of our ongoing strategy to increase market share in certain markets, we completed six business combinations during the nine months ended September 30, 2016 and five business combinations during the nine months ended September 30, 2015. The goodwill recognized in conjunction with these business combinations is attributable to expected improvement in the business of these acquired companies. Approximately $12.8 million and $22.1 million of the goodwill from acquisitions completed during the nine months ended September 30, 2016 and 2015, respectively, is expected to be tax deductible.

2016

On January 25, 2016, we acquired substantially all of the assets of Key Green Builder Services, LLC d/b/a Key Insulation. The purchase price consisted of cash of $5.0 million and seller obligations of $0.7 million. Revenue and net loss since the date of acquisition included in our Condensed Consolidated Statements of Operations for the three months ended September 30, 2016 were $2.0 million and $0.2 million, respectively, and $6.3 million and $0.4 million, respectively, for the nine months ended September 30, 2016.

On February 2, 2016, we acquired substantially all of the assets of Marshall Insulation, LLC (“Marshall”). The purchase price consisted of cash of $0.9 million and seller obligations of $0.1 million. Revenue and net loss since the date of acquisition included in our Condensed Consolidated Statements of Operations for the three months ended September 30, 2016 were $1.0 million and $54 thousand, respectively, and $2.5 million and $0.2 million, respectively, for the nine months ended September 30, 2016.

On February 29, 2016, we acquired substantially all of the assets of Kern Door Company, Inc. (“Kern”). The purchase price consisted of cash of $2.9 million and seller obligations of $0.1 million. Revenue and net loss since the date of acquisition included in our Condensed Consolidated Statements of Operations for the three months ended September 30, 2016 were $1.0 million and $62 thousand, respectively, and $2.0 million and $0.2 million, respectively, for the nine months ended September 30, 2016.

On April 12, 2016, we acquired substantially all of the assets of Alpine Insulation Co., Inc. (“Alpine”). The purchase price consisted of cash of $21.2 million and seller obligations of $1.6 million. Revenue and net income since the date of acquisition included in our Condensed Consolidated Statements of Operations for the three months ended September 30, 2016 were $7.9 million and $0.8 million, respectively, and $14.7 million and $1.2 million, respectively, for the nine months ended September 30, 2016.

On July 25, 2016, we acquired substantially all of the assets of FireClass, LLC (“FireClass”). The purchase price consisted of cash of $2.3 million. Revenue and net income since the date of acquisition included in our Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2016 were $0.8 million and $21 thousand, respectively.

On August 15, 2016, we acquired substantially all of the assets of Southern Insulators & Specialties, LLC (“Southern”). The purchase price consisted of cash of $4.1 million and seller obligations of $0.4 million. Revenue and net income since the date of acquisition included in our Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2016 were $0.7 million and $0.1 million, respectively.

2015

On March 12, 2015, we acquired 100% of the stock and membership interests of nine different legal entities, collectively referred to as BDI Insulation (“BDI”). The purchase price consisted of cash of $30.7 million and seller obligations of $5.8 million. Revenue and net income since the date of acquisition included in our Condensed Consolidated Statements of Operations for the three months ended September 30, 2015 were $10.3 million and $0.6 million, respectively, and $22.5 million and $1.6 million, respectively, for the nine months ended September 30, 2015.

On April 6, 2015, we acquired 100% of the common stock of C.Q. Insulation Inc. (“CQ”). The purchase price consisted of cash of $5.2 million and seller obligations of $2.3 million. Revenue and net income since the date of acquisition included in our Condensed Consolidated Statements of Operations for the three months ended September 30, 2015 were $2.7 million and $0.3 million, respectively, and $5.4 million and $0.5 million, respectively, for the nine months ended September 30, 2015.

On June 1, 2015, we acquired substantially all of the assets of Layman Brothers Contracting (“Layman”). The purchase price consisted of cash of $9.1 million and seller obligations of $0.6 million. Revenue and net income since the date of acquisition included in our Condensed Consolidated Statements of Operations for the three months ended September 30, 2015 were $3.7 million and $0.3 million, respectively, and $4.9 million and $0.4 million, respectively, for the nine months ended September 30, 2015.

On July 1, 2015, we acquired substantially all of the assets of EcoLogic Energy Solutions (“EcoLogic”). The purchase price consisted of cash of $3.0 million and seller obligations of $0.5 million. Revenue and net income since the date of acquisition included in our Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2015 were $1.8 million and $36 thousand, respectively.

On August 10, 2015, we acquired 100% of the common stock of Eastern Contractor Services (“Eastern”). The purchase price consisted of cash of $24.2 million and seller obligations of $2.9 million. Revenue and net income since the date of acquisition included in our Condensed Consolidated Statements of Operations for the three and nine months ended September 30, 2015 were $3.0 million and $0.3 million, respectively.

Purchase Price Allocations

The estimated fair values of the assets acquired and liabilities assumed for the acquisitions, as well as total purchase prices and cash paid, approximated the following as of September 30, and as may be adjusted during the valuation period since acquisition (in thousands):

	2016									2015
	Alpine			Other			Total			BDI			CQ			Layman			Eastern			Other			Total
Estimated fair values:
Cash	$	—		$	—		$	—		$	661		$	100		$	-		$	165		$	—		$	926
Accounts receivable		3,959			2,031			5,990			4,735			1,423			1,245			2,768			1,049			11,220
Inventories		700			888			1,588			980			152			267			335			119			1,853
Other current assets		18			12			30			368			39			-			109			10			526
Property and equipment		656			1,187			1,843			1,006			190			733			1,364			406			3,699
Intangibles		12,800			8,492			21,292			21,280			4,350			5,330			13,871			1,827			46,658
Goodwill		6,624			5,368			11,992			16,213			3,035			3,143			9,904			875			33,170
Other non-current assets		—			70			70			3,736			—			—			322			56			4,114
Accounts payable and other current liabilities		(2,046	)		(1,459	)		(3,505	)		(3,303	)		(1,539	)		(1,030	)		(1,681	)		(783	)		(8,336	)
Deferred income tax liabilities		—			(24	)		(24	)		(5,495	)		—			—			—			—			(5,495	)
Long term debt																				(82	)					(82	)
Other long-term liabilities		—			—			—			(3,736	)		(238	)		-			(1	)		—			(3,975	)
Fair value of assets acquired and purchase price		22,711			16,565			39,276			36,445			7,512			9,688			27,074			3,559			84,278
Less seller obligations		1,560			1,289			2,849			5,765			2,319			600			2,875			544			12,103
Cash paid	$	21,151		$	15,276		$	36,427		$	30,680		$	5,193		$	9,088		$	24,199		$	3,015		$	72,175

Further adjustments to the allocation for each acquisition still under its measurement period are expected as third-party or internal valuations are finalized, certain tax aspects of the transaction are completed, and customary post-closing reviews are concluded during the measurement period attributable to each individual business combination. As a result, insignificant adjustments to the fair value of assets acquired, and in some cases total purchase price, have been made to certain business combinations since the date of acquisition and future adjustments may be made through the end of each measurement period. Goodwill and intangibles per the above table do not agree to the total gross increases of these assets as shown in Note 3—Goodwill and Intangibles during the nine months ended September 30, 2016 due to minor adjustments to goodwill for the allocation of certain acquisitions still under measurement as well as other immaterial intangible assets added during the ordinary course of business. In addition, goodwill and intangibles increased during the nine months ended September 30, 2015 due to an immaterial tuck-in acquisition that does not appear in the above table.

Included in other noncurrent assets in the above table as of September 30, 2016 and 2015 is an insurance receivable of $2.0 million and an indemnification asset associated with the acquisition of BDI in the amount of $1.6 million. These assets offset equal liabilities included in other long-term liabilities in the same table, which represent additional insurance reserves and an uncertain tax position liability for which we may be liable. All amounts are measured at their acquisition date fair value.

Estimates of acquired intangible assets related to the acquisitions are as follows (dollars in thousands):

	2016				2015
Acquired intangibles assets	Estimated Fair Value		Weighted Avg Estimated Useful Life (yrs)		Estimated Fair Value		Weighted Avg Estimated Useful Life (yrs)
Customer relationships	$	12,862		9	$	29,958		8
Trademarks and trade names		6,116		15		12,882		15
Non-competition agreements		2,314		5		3,818		5

Pro Forma Information

The unaudited pro forma information for the combined results of the Company has been prepared as if the 2016 acquisitions had taken place on January 1, 2015 and the 2015 acquisitions had taken place on January 1, 2014. The unaudited pro forma information is not necessarily indicative of the results that we would have achieved had the transactions actually taken place on January 1, 2015 and 2014, and the unaudited pro forma information does not purport to be indicative of future financial operating results. See Note 12, Business Combinations, to our audited financial statements in Item 8 of Part II of our 2015 Form 10-K for additional information on 2015 acquisitions included in the table below (in thousands, except per share data):

	Pro forma for the three months ended September 30,				Pro forma for the nine months ended September 30,
	2016		2015		2016		2015
Net revenue	$	226,329	$	202,830	$	642,343	$	554,882
Net income attributable to common stockholders	$	11,709	$	10,211	$	27,387	$	19,353
Basic net income per share attributable to common stockholders	$	0.37	$	0.33	$	0.88	$	0.62
Diluted net income per share attributable to common stockholders	$	0.37	$	0.33	$	0.87	$	0.62

Unaudited pro forma net income attributable to common stockholders reflects additional intangible asset amortization expense of $37 thousand and $1.2 million for the three months ended September 30, 2016 and 2015, respectively, and $0.7 million and $4.9 million for the nine months ended September 30, 2016 and 2015, respectively, that would have been recorded had the 2016 acquisitions taken place on January 1, 2015 and the 2015 acquisitions taken place on January 1, 2014.

Unaudited pro forma net income attributable to common stockholders also includes additional income tax expense of $0.1 million and $0.3 million for the three months ended September 30, 2016 and 2015, respectively, and $18 thousand and $1.2 million for the nine months ended September 30, 2016 and 2015, respectively, that would have been recorded had the 2016 acquisitions taken place on January 1, 2015 and the 2015 acquisitions taken place on January 1, 2014.

In addition, approximately $1.0 million in transaction costs incurred by a seller resulting from a business combination that occurred during the nine months ended September 30, 2015 were included in earnings reported for the nine months ended September 30, 2014 and, therefore, are not included in proforma net income reported in the table above.

- Definition

The entire disclosure for a business combination (or series of individually immaterial business combinations) completed during the period, including background, timing, and recognized assets and liabilities. The disclosure may include leverage buyout transactions (as applicable).

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1497-128463

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 50
-Paragraph 4
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1490-128463

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
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-Section 50
-Paragraph 2
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Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 5: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
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-Section 50
-Paragraph 3
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1486-128463

Reference 6: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6927-128479

Reference 7: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 20
-Section 50
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=73530397&loc=d3e4845-128472

Reference 8: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Section 50
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-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1524-128463

Reference 9: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
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-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e7000-128479

Reference 10: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
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-Publisher FASB
-Name Accounting Standards Codification
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-Paragraph 4A
-URI http://asc.fasb.org/extlink&oid=73530397&loc=SL65897772-128472

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
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-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=65885119&loc=d3e1383-128463

Reference 15: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 30
-Section 50
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-URI http://asc.fasb.org/extlink&oid=35744584&loc=d3e6996-128479

+ Details

Income Per Common Share

9 Months Ended

Sep. 30, 2016

Earnings Per Share [Abstract]

Income Per Common Share

NOTE 11 –INCOME PER COMMON SHARE

Basic net income per share is calculated by dividing net income attributable to common stockholders by the weighted average shares outstanding during the period, without consideration for common stock equivalents.

Diluted net income per share is calculated by adjusting weighted average shares outstanding for the dilutive effect of common stock equivalents outstanding for the period, determined using the treasury stock method. Potential common stock is included in the diluted income per share calculation when dilutive. Diluted income per share was as follows (in thousands, except share and per share data):

	For the three months ended September 30,				For the nine months ended September 30,
	2016		2015		2016		2015
Net income attributable to common stockholders - basic and diluted	$	11,549	$	9,481	$	27,355	$	17,230
Weighted average number of common shares outstanding		31,323,600		31,237,275		31,294,596		31,318,682
Dilutive effect of outstanding common stock awards after application of the Treasury Stock Method		54,190		51,334		57,395		24,548
Diluted shares outstanding		31,377,790		31,288,609		31,351,991		31,343,230
Basic income per share attributable to common stockholders	$	0.37	$	0.30	$	0.87	$	0.55
Diluted income per share attributable to common stockholders	$	0.37	$	0.30	$	0.87	$	0.55

Subsequent Events	9 Months Ended
Subsequent Events	Sep. 30, 2016
Subsequent Events [Abstract]
Subsequent Events	NOTE 12 – SUBSEQUENT EVENTS On October 17, 2016, we acquired substantially all of the assets of East Coast Insulators II, L.L.C. for total consideration of approximately $16.5 million, subject to a working capital adjustment. The initial accounting for the business combination was not complete at the time the financial statements were issued due to the timing of the acquisition and the filing of this Quarterly Report on Form 10-Q. As a result, disclosures required under ASC 805-10-50, Business Combinations, cannot be made at this time. On October 29, 2016, we entered into a Share Purchase Agreement to acquire all of the outstanding shares of Trilok Industries, Inc., the sole equityholder of Alpha Insulation and Waterproofing, Inc., and Alpha Insulation and Waterproofing Company (collectively “Alpha”) for aggregate consideration of approximately $92.1 million, which includes $9.2 million by issuing 282,577 shares of the Company’s common stock with the remainder paid in cash. In addition, we will incur seller obligations totaling $1.9 million and the purchase price is subject to customary adjustments for cash and net working capital. We will also pay in full certain indebtedness of Alpha. Any payment for indebtedness in excess of approximately $0.4 million will reduce the amount of the purchase price by a corresponding amount. We may also be required to pay an additional amount in cash as earnout consideration. Consummation of the acquisition is subject to (i) customary closing conditions, including receipt of certain antitrust regulatory approvals, accuracy of representations (subject to materiality qualifiers) and compliance with covenants in all material respects; (ii) certain persons having agreed to employment offer letters and noncompetition agreements; (iii) certain individuals having agreed to release and waiver agreements and (iv) the receipt of certain documents with respect to leased properties. We currently expect to fund and close this acquisition in the first quarter of 2017. If the close does not occur by February 25, 2017, the parties can terminate the definitive purchase agreement, subject to an extension for antitrust regulatory approval and certain other conditions. On November 1, 2016, we acquired substantially all of the assets of Mike’s Garage Door, L.L.C. for total consideration of approximately $0.6 million. The initial accounting for the business combination was not complete at the time the financial statements were issued due to the timing of the acquisition and the filing of this Quarterly Report on Form 10-Q. As a result, disclosures required under ASC 805-10-50, Business Combinations, cannot be made at this time.

Significant Accounting Policies (Policies)	9 Months Ended
Significant Accounting Policies (Policies)	Sep. 30, 2016
Accounting Policies [Abstract]
Basis of Presentation and Principles of Consolidation	Basis of Presentation and Principles of Consolidation The accompanying condensed consolidated financial statements include all of our wholly owned subsidiaries and majority owned subsidiaries. The non-controlling interest relating to majority owned subsidiaries is not significant for presentation. All intercompany accounts and transactions have been eliminated. The information furnished in the condensed consolidated financial statements includes normal recurring adjustments and reflects all adjustments which are, in the opinion of management, necessary for a fair presentation of the results of operations and statements of financial position for the interim periods presented. Certain information and footnote disclosures normally included in the consolidated financial statements prepared in accordance with accounting principles generally accepted in the United States of America (“U.S. GAAP”) and the rules and regulations of the Securities and Exchange Commission (the “SEC”) have been condensed or omitted pursuant to such rules and regulations. We believe that the disclosures are adequate to prevent the information presented from being misleading when read in conjunction with our consolidated financial statements and the notes thereto included in Part II, Item 8, Financial Statements and Supplementary Data, of our Annual Report on Form 10-K for the fiscal year ended December 31, 2015 (the “2015 Form 10-K”), as filed with the SEC on March 9, 2016. The December 31, 2015 condensed consolidated balance sheet data was derived from the audited financial statements but does not include all disclosures required by U.S. GAAP. Our interim operating results for the three and nine months ended September 30, 2016 are not necessarily indicative of the results to be expected in future operating quarters. See Part I, Item 1A. Risk Factors in our 2015 Form 10-K and Part II, Item 1A. Risk Factors in our Quarterly Reports on Form 10-Q for the periods ended June 30, 2016 and September 30, 2016 for additional information regarding risk factors that may impact our results. Note 2 to the consolidated financial statements in our 2015 Form 10-K describes the significant accounting policies and estimates used in preparation of the consolidated financial statements. There have been no changes to our significant accounting policies or estimates during the three or nine months ended September 30, 2016.
Use of Estimates	Use of Estimates Preparation of the consolidated financial statements in conformity with U.S. GAAP requires management to make estimates and assumptions that affect the reported amounts of assets and liabilities and disclosure of contingent assets and liabilities at the date of the financial statements and the reported amounts of revenues and expenses during the reporting period. Significant estimates include the allowance for doubtful accounts, valuation allowance on deferred tax assets, valuation of the reporting unit, intangible assets and other long-lived assets, share-based compensation, reserves for general liability, and workers’ compensation and medical insurances. Management believes the accounting estimates are appropriate and reasonably determined; however, due to the inherent uncertainties in making these estimates, actual amounts could differ from such estimates.
Advertising Costs	Advertising Costs Advertising costs are expensed as incurred. Advertising expense was approximately $0.8 million and $2.2 million for the three and nine months ended September 30, 2016, respectively, and $0.6 million and $1.6 million for the three and nine months ended September 30, 2015, respectively, and is included in selling expense on the Condensed Consolidated Statements of Operations.
Recently Adopted Accounting Pronouncements	Recently Adopted Accounting Pronouncements In April 2015, the Financial Accounting Standards Board (“FASB”) issued Accounting Standards Update (“ASU”) 2015-03, “Simplifying the Presentation of Debt Issuance Costs.” Under this ASU, we present debt issuance costs in the balance sheet as a reduction from the related debt liability rather than as an asset. Amortization of such costs will continue to be reported as interest expense. During the nine months ended September 30, 2016, we retrospectively adopted ASU 2015-03, which resulted in a reclassification of $0.5 million of debt issuance costs related to our long-term debt from other non-current assets to long-term debt as of December 31, 2015. In April 2015, the FASB issued ASU 2015-05, “Intangibles–Goodwill and Other–Internal-Use Software (Subtopic 350-40): Customer's Accounting for Fees Paid in a Cloud Computing Arrangement.” This update provides criteria for customers in a cloud computing arrangement to determine whether the arrangement includes a license of software. We adopted this guidance effective January 1, 2016 and have determined this ASU did not have a material impact on our condensed consolidated financial statements. In August 2015, the FASB issued ASU 2015-15, “Imputation of Interest (Subtopic 835-30).” This ASU amends ASU 2015-03 regarding the presentation and subsequent measurement of debt issuance costs related to line of credit arrangements. Specifically, it provides guidance for deferring and presenting debt issuance costs as an asset and subsequently amortizing the deferred debt issuance costs ratably over the term of the line of credit arrangement, regardless of whether there are any outstanding borrowings on the line of credit arrangement. We adopted this guidance effective January 1, 2016 and have determined this ASU did not have a material impact on our condensed consolidated financial statements. After applying the new guidance, deferred debt issuance costs, net of accumulated amortization, were $1.3 million and $0.6 million as September 30, 2016 and December 31, 2015, respectively. In September 2015, the FASB issued ASU 2015-16, “Business Combinations (Topic 805).” This ASU requires an acquirer to retrospectively adjust provisional amounts recognized in a business combination during the measurement period. To simplify the accounting for adjustments made to provisional amounts, the amendments in this update require that the acquirer recognize adjustments to provisional amounts that are identified during the measurement period in the reporting period in which the adjustment amount is determined. The acquirer is required to also record, in the same period’s financial statements, the effect on earnings of changes in depreciation, amortization or other income effects, if any, as a result of the change to the provisional amounts, calculated as if the accounting had been completed at the acquisition date. In addition, an entity is required to present separately on the face of the income statement or disclose in the notes to the financial statements the portion of the amount recorded in current period earnings by line item that would have been recorded in previous reporting periods if the adjustment to the provisional amounts had been recognized as of the acquisition date. For public business entities, this update is effective for fiscal years beginning after December 15, 2015, including interim periods within those fiscal years. While previous adjustments to provisional amounts did not have a material impact on our condensed consolidated financial statements, it is possible that future adjustments made during measurement periods to recently acquired entities or entities acquired in the future could have a material impact on our condensed consolidated financial statements. In March 2016, the FASB issued ASU No. 2016-09, “Compensation-Stock Compensation (Topic 718).” This update amends the accounting for forfeitures, employer tax withholding on share-based compensation and the financial statement presentation of excess tax benefits or deficiencies. This ASU also clarifies the statement of cash flows presentation for certain components of share-based awards. As early adoption is permitted, we adopted this standard effective January 1, 2016 and have concluded that it did not have a material impact on our condensed consolidated financial statements. Under ASU 2016-09, we classify the excess income tax benefits from stock-based compensation arrangements as a discrete item within income tax expense, rather than recognizing such excess income tax benefits in additional paid-in capital. Excess income tax benefits from stock-based compensation arrangements are classified as an operating activity rather than as a financing activity. In addition, when we withhold shares from an employee’s vesting of common stock awards to fund payment by us of the employee’s taxes, the payment is classified as a financing activity. We have elected to continue to estimate the forfeitures expected to occur to determine the amount of compensation cost to be recognized in each period.
Recently Issued Accounting Pronouncements Not Yet Adopted	Recently Issued Accounting Pronouncements Not Yet Adopted In May 2014, the FASB issued ASU 2014-09, “Revenue from Contracts with Customers (Topic 606).” ASU 2014-09 sets forth a new revenue recognition model that requires identifying the contract(s) with a customer, identifying the performance obligations in the contract, determining the transaction price, allocating the transaction price to the performance obligations and recognizing the revenue upon satisfaction of performance obligations. In July 2015, the FASB voted to defer the application of the provisions of this standard for public companies until annual reporting periods beginning after December 15, 2017, including interim periods within that reporting period. We are still evaluating whether this ASU will have a material impact on our condensed consolidated financial statements. In July 2015, the FASB issued ASU 2015-11, “Inventory (Topic 330).” This update requires an entity to measure inventory within the scope of the update at the lower of cost and net realizable value. For public business entities, this update is effective for financial statements issued for fiscal years beginning after December 15, 2016, and interim periods within those fiscal years. We are still evaluating whether this ASU will have a material impact on our condensed consolidated financial statements. In February 2016, the FASB issued ASU 2016-02, “Leases (Topic 842).” This update amends the existing accounting standards for lease accounting, including requiring lessees to recognize most leases on their balance sheets and making targeted changes to lessor accounting. ASU 2016-02 requires a modified retrospective transition approach for all leases existing at, or entered into after, the date of initial application, with an option to use certain transition relief. For public business entities, this update is effective for annual reporting periods beginning after December 15, 2018, including interim periods within those fiscal years, and early adoption is permitted as of the standard’s issuance date. We are still evaluating whether this ASU will have a material impact on our condensed consolidated financial statements. In March 2016, the FASB issued ASU 2016-06, “Derivatives and Hedging (Topic 815): Contingent Put and Call Options in Debt Instruments.” This ASU clarifies the requirement for assessing whether contingent call (put) options that can accelerate the payment of principal on debt instruments are clearly and closely related to their debt hosts. An entity performing the assessment under this amendment is required to assess the embedded call (put) options solely in accordance with the four-step decision sequence. Consequently, when a call (put) option is contingently exercisable, an entity does not have to assess whether the event that triggers the ability to exercise a call (put) option is related to interest rates or credit risks. For public business entities, this update is effective for financial statements issued for fiscal years beginning after December 15, 2016 and interim periods within those fiscal years. We are still evaluating whether this ASU will have a material impact on our condensed consolidated financial statements. In April 2016, the FASB issued ASU No. 2016-10, “Revenue from Contracts with Customers (Topic 606): Identifying Performance Obligations and Licensing,” which provides supplemental adoption guidance and clarification to ASU 2014-09. ASU 2016-10 must be adopted concurrently with the adoption of ASU 2014-09. We are still evaluating whether the future adoption of these pronouncements will have a material impact on our condensed consolidated financial statements. In May 2016, the FASB issued ASU No. 2016-11, “Revenue Recognition (Topic 605) and Derivatives and Hedging (Topic 815): Rescission of SEC Guidance Because of Accounting Standards Updates 2014-09 and 2014-16 pursuant to Staff announcements at the March 3, 2016 EITF Meeting” This ASU rescinds from the FASB Accounting Standards Codification certain SEC paragraphs as a result of two SEC Staff Announcements at the March 3, 2016 meeting. For public entities, the amendments related to Topic 605 are effective for interim and annual reporting periods beginning after December 15, 2017 and amendments related to Topic 815 are effective for interim and annual reporting periods beginning after December 15, 2015. We are still evaluating whether the portion of this ASU related to Topic 605 will have a material impact on our condensed consolidated financial statements but have concluded that the portion of this ASU related to Topic 815 is not applicable and, therefore, did not have a material impact on our condensed consolidated financial statements. In May 2016, the FASB issued ASU 2016-12, “Revenue from Contracts with Customers (Topic 606): Narrow-Scope Improvements and Practical Expedients.” The amendments in this ASU provide additional clarification and implementation guidance on the previously issued ASU 2014-09. This ASU provides clarification to Topic 606 on how to assess collectability, present sales tax, treat noncash consideration, and account for completed and modified contracts at the time of transition. The amendment also clarifies that an entity retrospectively applying the guidance in Topic 606 is not required to disclose the effect of the accounting change in the period of adoption. The effective date and transition requirements for these amendments are the same as the effective date and transition requirements of ASU 2014-09, which is effective for fiscal years, and for interim periods within those years, beginning after December 15, 2017. We are still evaluating whether this ASU will have a material impact on our condensed consolidated financial statements. In June 2016, the FASB issued ASU 2016-13, “Financial Instruments - Credit Losses (Topic 326): Measurement of Credit Losses on Financial Instruments.” This ASU amends the accounting for credit losses on available-for-sale debt securities and purchased financial assets with credit deterioration. In addition, these amendments require the measurement of all expected credit losses for financial assets, including trade accounts receivable, held at the reporting date based on historical experience, current conditions, and reasonable and supportable forecasts. For public business entities, this update is effective for financial statements issued for fiscal years beginning after December 15, 2019 and interim periods within those fiscal years. We are still evaluating whether this ASU will have a material impact on our condensed consolidated financial statements. In August 2016, the FASB issued ASU 2016-15, “Statement of Cash Flows: Clarification of Certain Cash Receipts and Cash Payments (Topic 230).” This ASU addresses the diversity in practice related to the classification of certain cash receipts and payments in the statement of cash flows by adding or clarifying guidance on eight specific cash flow issues. For public business entities, this update is effective for financial statements issued for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. We are still evaluating whether this ASU will have a material impact on our condensed consolidated financial statements. In October 2016, the FASB issued ASU 2016-16, “Income Taxes (Topic 740): intra-entity transfers of assets other than inventory.” This ASU aligns the recognition of income tax consequences for intra-entity transfers of assets other than inventory with International Financial Reporting Standards (IFRS). For public business entities, this update is effective for financial statements issued for fiscal years beginning after December 15, 2017 and interim periods within those fiscal years. We are still evaluating whether this ASU will have a material impact on our condensed consolidated financial statements.

Organization (Tables)

9 Months Ended

Sep. 30, 2016

Organization Consolidation And Presentation Of Financial Statements [Abstract]

Summary of Percentage of Net Revenue by End Market

The following table sets forth the percentage of our net revenue by end market:

	Three months ended September 30,						Nine months ended September 30,
	2016			2015			2016			2015
Residential new construction and repair and remodel		89	%		89	%		88	%		89	%
Commercial construction		11	%		11	%		12	%		11	%
		100	%		100	%		100	%		100	%

Goodwill and Intangibles (Tables)

9 Months Ended

Sep. 30, 2016

Goodwill And Intangible Assets Disclosure [Abstract]

Summary of Change in Carrying Amount of Goodwill

The change in carrying amount of goodwill was as follows (in thousands):

	Goodwill (Gross)		Accumulated Impairment Losses			Goodwill (Net)
January 1, 2016	$	160,516	$	(70,004	)	$	90,512
Business Combinations		12,006		—			12,006
September 30, 2016	$	172,522	$	(70,004	)	$	102,518

Schedule of Gross Carrying Amount and Accumulated Amortization

The following table provides the gross carrying amount and accumulated amortization for each major class of intangibles (in thousands):

	As of September 30, 2016						As of December 31, 2015
	Gross Carrying Amount		Accumulated Amortization		Net Book Value		Gross Carrying Amount		Accumulated Amortization		Net Book Value
Amortized intangibles:
Customer relationships	$	75,261	$	25,562	$	49,699	$	62,399	$	20,231	$	42,168
Covenants not-to-compete		8,143		2,003		6,140		5,729		847		4,882
Trademarks and tradenames		34,436		9,852		24,584		28,320		8,152		20,168
	$	117,840	$	37,417	$	80,423	$	96,448	$	29,230	$	67,218

Schedule of Estimated Aggregate Annual Amortization

Remaining estimated aggregate annual amortization expense is as follows (amounts, in thousands, are for the fiscal year ended):

Remainder of 2016	$	2,859
2017		11,045
2018		10,741
2019		10,229
2020		9,622
Thereafter		35,927

Long-Term Debt (Tables)

9 Months Ended

Sep. 30, 2016

Debt Disclosure [Abstract]

Schedule of Maturities of Long-term Debt

Debt consisted of the following (in thousands):

	As of September 30,			As of December 31,
	2016			2015
Term loans, as amended, net of unamortized debt discount of $477 and $249, respectively	$	97,030		$	47,876
Delayed draw term loans, as amended, net of unamortized debt discount of $50 and $261, respectively		12,443			49,739
Vehicle and equipment notes, maturing through September 2021; payable in various monthly installments, including interest rates ranging from 2% to 4%		33,414			21,091
Various notes payable, maturing through March 2025; payable in various monthly installments, including interest rates ranging from 4% to 6%		5,188			4,529
		148,075			123,235
Less: current maturities		(15,064	)		(10,021	)
Long-term debt, less current maturities	$	133,011		$	113,214

Employee Benefits (Tables)

9 Months Ended

Sep. 30, 2016

Postemployment Benefits [Abstract]

Summary of Workers' Compensation Known Claims and IBNR Reserves

Workers’ compensation known claims and IBNR reserves included on the Condensed Consolidated Balance Sheets were as follows (in thousands):

	September 30,		December 31,
	2016		2015
Included in other current liabilities	$	4,033	$	3,263
Included in other long-term liabilities		7,503		7,132
	$	11,536	$	10,395

Schedule of Insurance Receivable for Claims

That receivable offsets an equal liability included within the reserve amounts noted above and was as follows (in thousands):

	September 30,		December 31,
	2016		2015
Included in other non-current assets	$	1,256	$	1,542

Summary of Nonvested Common Stock Awards and Changes During Period

Nonvested common stock awards for employees as of December 31, 2015 and changes during the nine months ended September 30, 2016 were as follows:

	Common Stock Awards			Weighted Average Grant Date Fair Market Value Per Share
Nonvested common stock awards at December 31, 2015		129,053		$	21.52
Granted		143,528			26.98
Vested		(109,473	)		21.48
Forfeited		(1,183	)		24.97
Nonvested common stock awards at September 30, 2016		161,925		$	26.37

Related Party Transactions (Tables)

9 Months Ended

Sep. 30, 2016

Schedule of Related Party Transactions

	Three months ended September 30,				Nine months ended September 30,
	2016		2015		2016		2015
Sales	$	2,182	$	1,924	$	5,282	$	4,661
Purchases		114		80		370		366
Rent		163		150		472		446

Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 2016

Commitments And Contingencies Disclosure [Abstract]

Schedule of Accrued General Insurance Reserves

Accrued general insurance reserves included on the Condensed Consolidated Balance Sheets were as follows (in thousands):

	September 30, 2016		December 31, 2015
Included in other current liabilities	$	1,667	$	1,304
Included in other long-term liabilities		8,514		6,879
	$	10,181	$	8,183

Schedule of General Liability Insurance Receivable for Claims

	September 30, 2016		December 31, 2015
General liability insurance receivable and indemnification asset for claims under a fully insured policy	$	2,815	$	2,815
General liability insurance receivable for claims that exceeded the stop loss limit		907		821
Total general liability insurance receivables included in other non-current assets	$	3,722	$	3,636

Future Minimum Lease Payments Under Noncancellable Operating Leases

Future minimum lease payments under noncancellable operating leases (with initial or remaining lease terms in excess of one year) with related parties as of September 30, 2016 are as follows (amounts, in thousands, are as of the fiscal year ended):

Remainder of 2016	$	133
2017		366
2018		155
2019		—
2020		—
Thereafter		—

- Definition

Tabular disclosure of a lessee's leasing arrangements including: (1) the basis on which contingent rental payments are determined, (2) the existence and terms of renewal or purchase options and escalation clauses, (3) restrictions imposed by lease arrangements, such as those concerning dividends, additional debt, and further leasing, (4) rent holidays, rent concessions, or leasehold improvement incentives and unusual provisions or conditions. Disclosure may also include the specific period used to amortize material leasehold improvements made at the inception of the lease or during the lease term. Additionally, for operating leases having initial or remaining noncancelable lease terms in excess of one year: (a) future minimum rental payments required as of the date of the latest balance sheet presented, in the aggregate and for each of the five succeeding fiscal years, (b) the total of minimum rentals to be received in the future under noncancelable subleases as of the date of the latest balance sheet presented, and (c) for all operating leases, rental expense for each period for which an income statement is presented, with separate amounts for minimum rentals, contingent rentals, and sublease rentals. Rental payments under leases with terms of a month or less that were not renewed need not be included.

+ References + Details

Business Combinations (Tables)

9 Months Ended

Sep. 30, 2016

Business Combinations [Abstract]

Summary of Estimated Fair Value of Assets Acquired and Liabilities Assumed

	2016									2015
	Alpine			Other			Total			BDI			CQ			Layman			Eastern			Other			Total
Estimated fair values:
Cash	$	—		$	—		$	—		$	661		$	100		$	-		$	165		$	—		$	926
Accounts receivable		3,959			2,031			5,990			4,735			1,423			1,245			2,768			1,049			11,220
Inventories		700			888			1,588			980			152			267			335			119			1,853
Other current assets		18			12			30			368			39			-			109			10			526
Property and equipment		656			1,187			1,843			1,006			190			733			1,364			406			3,699
Intangibles		12,800			8,492			21,292			21,280			4,350			5,330			13,871			1,827			46,658
Goodwill		6,624			5,368			11,992			16,213			3,035			3,143			9,904			875			33,170
Other non-current assets		—			70			70			3,736			—			—			322			56			4,114
Accounts payable and other current liabilities		(2,046	)		(1,459	)		(3,505	)		(3,303	)		(1,539	)		(1,030	)		(1,681	)		(783	)		(8,336	)
Deferred income tax liabilities		—			(24	)		(24	)		(5,495	)		—			—			—			—			(5,495	)
Long term debt																				(82	)					(82	)
Other long-term liabilities		—			—			—			(3,736	)		(238	)		-			(1	)		—			(3,975	)
Fair value of assets acquired and purchase price		22,711			16,565			39,276			36,445			7,512			9,688			27,074			3,559			84,278
Less seller obligations		1,560			1,289			2,849			5,765			2,319			600			2,875			544			12,103
Cash paid	$	21,151		$	15,276		$	36,427		$	30,680		$	5,193		$	9,088		$	24,199		$	3,015		$	72,175

Estimates of Acquired Intangible Assets

Estimates of acquired intangible assets related to the acquisitions are as follows (dollars in thousands):

	2016				2015
Acquired intangibles assets	Estimated Fair Value		Weighted Avg Estimated Useful Life (yrs)		Estimated Fair Value		Weighted Avg Estimated Useful Life (yrs)
Customer relationships	$	12,862		9	$	29,958		8
Trademarks and trade names		6,116		15		12,882		15
Non-competition agreements		2,314		5		3,818		5

Pro Forma Results of Operations

	Pro forma for the three months ended September 30,				Pro forma for the nine months ended September 30,
	2016		2015		2016		2015
Net revenue	$	226,329	$	202,830	$	642,343	$	554,882
Net income attributable to common stockholders	$	11,709	$	10,211	$	27,387	$	19,353
Basic net income per share attributable to common stockholders	$	0.37	$	0.33	$	0.88	$	0.62
Diluted net income per share attributable to common stockholders	$	0.37	$	0.33	$	0.87	$	0.62

Income Per Common Share (Tables)

9 Months Ended

Sep. 30, 2016

Earnings Per Share [Abstract]

Summary of Diluted Income Per Share

Diluted income per share was as follows (in thousands, except share and per share data):

	For the three months ended September 30,				For the nine months ended September 30,
	2016		2015		2016		2015
Net income attributable to common stockholders - basic and diluted	$	11,549	$	9,481	$	27,355	$	17,230
Weighted average number of common shares outstanding		31,323,600		31,237,275		31,294,596		31,318,682
Dilutive effect of outstanding common stock awards after application of the Treasury Stock Method		54,190		51,334		57,395		24,548
Diluted shares outstanding		31,377,790		31,288,609		31,351,991		31,343,230
Basic income per share attributable to common stockholders	$	0.37	$	0.30	$	0.87	$	0.55
Diluted income per share attributable to common stockholders	$	0.37	$	0.30	$	0.87	$	0.55

Organization - Additional Information (Detail)	9 Months Ended
Organization - Additional Information (Detail)	Sep. 30, 2016 Location Segment
Basis Of Presentation And Organization [Line Items]
Number of operating segment \| Segment	1
UNITED STATES
Basis Of Presentation And Organization [Line Items]
Number of locations the company operates \| Location	100

Organization - Summary of Percentage of Net Revenue by End Market (Detail) - Customer Concentration Risk [Member] - Revenue [Member]	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Product Information [Line Items]
Net revenues percentage	100.00%	100.00%	100.00%	100.00%
Residential New Construction and Repair and Remodel [Member]
Product Information [Line Items]
Net revenues percentage	89.00%	89.00%	88.00%	89.00%
Commercial Construction [Member]
Product Information [Line Items]
Net revenues percentage	11.00%	11.00%	12.00%	11.00%

Significant Accounting Policies - Additional Information (Detail) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Accounting Policies and General Information [Line Items]
Advertising expenses	$ 0.8	$ 0.6	$ 2.2	$ 1.6
ASU 2015-03 [Member]
Accounting Policies and General Information [Line Items]
Debt issuance costs			0.5
Deferred debt issuance costs, net of accumulated amortization	$ 1.3		$ 1.3		$ 0.6

Goodwill and Intangibles - Summary of Change in Carrying Amount of Goodwill (Detail) $ in Thousands	9 Months Ended
	Sep. 30, 2016 USD ($)
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill (Gross), beginning balance	$ 160,516
Business Combinations	12,006
Goodwill (Gross), ending balance	172,522
Accumulated Impairment Losses, beginning balance	(70,004)
Accumulated Impairment Losses, ending balance	(70,004)
Goodwill (Net), beginning balance	90,512
Goodwill (Net), ending balance	$ 102,518

Goodwill and Intangibles - Additional Information (Detail) - USD ($)	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Goodwill And Intangible Assets Disclosure [Abstract]
Goodwill impairment	$ 0	$ 0
Increase in gross carrying amount of intangibles	$ 21,400,000

Goodwill and Intangibles - Schedule of Gross Carrying Amount, Accumulated Amortization and Net Book Value (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	$ 117,840	$ 96,448
Accumulated Amortization	37,417	29,230
Net Book Value	80,423	67,218
Customer Relationships [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	75,261	62,399
Accumulated Amortization	25,562	20,231
Net Book Value	49,699	42,168
Covenants Not-to-compete [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	8,143	5,729
Accumulated Amortization	2,003	847
Net Book Value	6,140	4,882
Trademarks and Trade Names [Member]
Finite-Lived Intangible Assets [Line Items]
Gross Carrying Amount	34,436	28,320
Accumulated Amortization	9,852	8,152
Net Book Value	$ 24,584	$ 20,168

Goodwill and Intangibles - Schedule of Estimated Aggregate Annual Amortization (Detail) $ in Thousands	Sep. 30, 2016 USD ($)
Finite Lived Intangible Assets Net Amortization Expense Rolling Maturity [Abstract]
Remainder of 2016	$ 2,859
2017	11,045
2018	10,741
2019	10,229
2020	9,622
Thereafter	$ 35,927

Long-term Debt - Schedule of Maturities of Long-term Debt (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Term loans, as amended, net of unamortized debt discount of $477 and $249, respectively	$ 97,030	$ 47,876
Vehicle and equipment notes, maturing through September 2021; payable in various monthly installments, including interest rates ranging from 2% to 4%	33,414	21,091
Various notes payable, maturing through March 2025; payable in various monthly installments, including interest rates ranging from 4% to 6%	5,188	4,529
Total long term debt	148,075	123,235
Less: current maturities	(15,064)	(10,021)
Long-term debt, less current maturities	133,011	113,214
Delayed Draw [Member]
Debt Instrument [Line Items]
Delayed draw term loans, as amended, net of unamortized debt discount of $50 and $261, respectively	$ 12,443	$ 49,739

Long-term Debt - Schedule of Maturities of Long-term Debt (Parenthetical) (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Unamortized debt discount	$ 477	$ 249
Notes payable maturity date	2025-03
Minimum [Member]
Debt Instrument [Line Items]
Notes payable Interest rate	4.00%
Maximum [Member]
Debt Instrument [Line Items]
Notes payable Interest rate	6.00%
Delayed Draw [Member]
Debt Instrument [Line Items]
Unamortized debt discount	$ 50	$ 261
Vehicle and Equipment [Member]
Debt Instrument [Line Items]
Notes payable maturity date	2021-09
Vehicle and Equipment [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Notes payable Interest rate	2.00%
Vehicle and Equipment [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Notes payable Interest rate	4.00%

Long-term Debt - Additional Information (Detail) - USD ($)		9 Months Ended	12 Months Ended
	Feb. 29, 2016	Sep. 30, 2016	Dec. 31, 2015
Debt Instrument [Line Items]
Assets relating to master loan agreements, Gross		$ 64,700,000	$ 64,900,000
Capital leased assets, net book value		$ 17,800,000	22,100,000
Master Loan Agreements [Member]
Debt Instrument [Line Items]
Payment Period, typical		60 months
Assets relating to master loan agreements, Gross		$ 43,500,000	25,400,000
Capital leased assets, net book value		35,200,000	$ 22,400,000
Credit and Security Agreement [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 325,000,000
Issuance of letters of credit		$ 18,000,000
Principal amount of term loans or additional revolving credit commitments	$ 75,000,000
Credit facility, covenant terms		The Credit and Security Agreement contains covenants that require us to (1) maintain a fixed charge coverage ratio of not less than 1.10 to 1.0 and (2) maintain a leverage ratio of no greater than: (a) 3.50 to 1.00 through December 30, 2016; (b) 3.25 to 1.00 on December 31, 2016 through June 29, 2017; (c) 3.00 to 1.00 on June 30, 2017 through December 30, 2017; (d) 2.75 to 1.00 on December 31, 2017 through June 29, 2018; and (e) 2.50 to 1.00 on June 30, 2018 and thereafter.
Credit facility, interest rate description		The Credit and Security Agreement also contains various restrictive non-financial covenants and a provision that, upon an event of default (as defined by the Credit and Security Agreement), amounts outstanding under the Credit and Security Agreement would bear interest at the rate as determined above plus 2.0% per annum.
Contingent interest rate increase	2.00%
Credit and Security Agreement [Member] \| Minimum [Member] \| Through the First Quarter Ending June 30, 2016 [Member]
Debt Instrument [Line Items]
Fixed coverage ratio, covenants requirements	110.00%
Credit and Security Agreement [Member] \| Maximum [Member] \| Through December 30, 2016 [Member]
Debt Instrument [Line Items]
Leverage Ratio, covenants requirements	350.00%
Credit and Security Agreement [Member] \| Maximum [Member] \| December 31, 2016 Through June 29, 2017 [Member]
Debt Instrument [Line Items]
Leverage Ratio, covenants requirements	325.00%
Credit and Security Agreement [Member] \| Maximum [Member] \| June 30, 2017 Through December 30, 2017 [Member]
Debt Instrument [Line Items]
Leverage Ratio, covenants requirements	300.00%
Credit and Security Agreement [Member] \| Maximum [Member] \| December 31, 2017 Through June 29, 2018 [Member]
Debt Instrument [Line Items]
Leverage Ratio, covenants requirements	275.00%
Credit and Security Agreement [Member] \| Maximum [Member] \| June 30, 2018 and Thereafter [Member]
Debt Instrument [Line Items]
Leverage Ratio, covenants requirements	250.00%
Credit and Security Agreement [Member] \| Senior Secured Credit Facilities [Member]
Debt Instrument [Line Items]
Credit facility term	5 years
Credit and Security Agreement [Member] \| Revolving Credit Facility [Member]
Debt Instrument [Line Items]
Line of credit maximum borrowing capacity	$ 100,000,000
Issuance of letters of credit	$ 20,000,000
Line of credit outstanding		$ 0
Commitment fee		0.225%
Credit and Security Agreement [Member] \| Revolving Credit Facility [Member] \| February 29, 2016 Through August 31, 2016 [Member]
Debt Instrument [Line Items]
Commitment fee	0.225%
Credit and Security Agreement [Member] \| Revolving Credit Facility [Member] \| Minimum [Member]
Debt Instrument [Line Items]
Commitment fee	0.20%
Credit and Security Agreement [Member] \| Revolving Credit Facility [Member] \| Maximum [Member]
Debt Instrument [Line Items]
Commitment fee	0.30%
Credit and Security Agreement [Member] \| Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 100,000,000
Credit and Security Agreement [Member] \| Term Loan [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Margin interest rate percentage		2.31%	1.95%
Interest rate terms		1-month LIBOR
Credit and Security Agreement [Member] \| Delayed Draw Term Loan [Member]
Debt Instrument [Line Items]
Debt instrument, face amount	$ 125,000,000
Ticking fee	0.375%
Maturity date	Feb. 28, 2017
Credit and Security Agreement [Member] \| Delayed Draw Term Loan [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Margin interest rate percentage		2.31%	1.95%
Interest rate terms		1-month LIBOR
Credit and Security Agreement [Member] \| Swing Lines Loan [Member]
Debt Instrument [Line Items]
Issuance of letters of credit	$ 5,000,000
Credit and Security Agreement [Member] \| Term Loan And Delayed Draw Term Loan [Member] \| LIBOR [Member]
Debt Instrument [Line Items]
Maturity date	Feb. 28, 2021

Employee Benefits - Additional Information (Detail)	3 Months Ended		9 Months Ended
Employee Benefits - Additional Information (Detail)	Sep. 30, 2016 USD ($) shares	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) Installment shares	Sep. 30, 2015 USD ($) Installment shares	Dec. 31, 2015 USD ($)
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Healthcare benefit expense, net of employee contributions	$ 3,700,000	$ 3,000,000	$ 11,400,000	$ 8,900,000
Accrued compensation	17,464,000		17,464,000		$ 14,488,000
Workers' compensation expense	3,400,000	2,600,000	$ 9,200,000	$ 6,600,000
Common stock granted, shares \| shares			143,528
Unrecognized compensation expense	3,400,000		$ 3,400,000
Common nonvested shares, compensation cost not yet recognized, period for recognition			2 years 6 months
2014 Omnibus Incentive Plan [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Common stock granted, shares \| shares			100,000	100,000
Share based compensation expenses	400,000	$ 600,000	$ 1,200,000	$ 1,200,000
Number of equal installments for vesting common stock \| Installment			3	3
Number of shares surrendered to satisfy tax withholding obligations \| shares			32,000
Share based compensation, recognized tax benefits	$ 0		$ 300,000
Common stock vested percentage				100.00%
Common stock shares available for issuance \| shares	2,700,000		2,700,000
2014 Omnibus Incentive Plan [Member] \| Directors [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Common stock granted, shares \| shares			9,000	13,000
Share based compensation expenses			$ 300,000	$ 300,000
Medical IBNR Included in Accrued Compensation [Member]
Pension Plans, Postretirement and Other Employee Benefits [Line Items]
Accrued compensation	$ 1,600,000		$ 1,600,000		$ 1,500,000

Employee Benefits - Summary of Workers' Compensation Known Claims and IBNR Reserves (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Employee Related Liabilities Current And Noncurrent [Abstract]
Included in other current liabilities	$ 4,033	$ 3,263
Included in other long-term liabilities	7,503	7,132
Workers' Compensation Liability	$ 11,536	$ 10,395

Employee Benefits - Schedule of Insurance Receivable for Claims (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Workers' Compensation [Member]
Malpractice Insurance [Line Items]
Included in other non-current assets	$ 1,256	$ 1,542

Employee Benefits - Summary of Nonvested Common Stock Awards and Changes During Period (Detail)	9 Months Ended
	Sep. 30, 2016 $ / shares shares
Common Stock Awards
Nonvested common stock awards, Beginning balance \| shares	129,053
Granted \| shares	143,528
Vested \| shares	(109,473)
Forfeited \| shares	(1,183)
Nonvested common stock awards, Ending balance \| shares	161,925
Weighted Average Grant Date Fair Market Value Per Share
Nonvested common stock awards, Beginning balance \| $ / shares	$ 21.52
Granted \| $ / shares	26.98
Vested \| $ / shares	21.48
Forfeited \| $ / shares	24.97
Nonvested common stock awards, Ending balance \| $ / shares	$ 26.37

Income Taxes - Additional Information (Detail) - USD ($)	3 Months Ended	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2016
Income Taxes [Line Items]
Effective tax rate from continuing operations	36.80%	35.10%
Income tax benefit		$ 0
ASU 2016-09 [Member]
Income Taxes [Line Items]
Excess income tax benefits recognized from stock-based compensation	$ 0	$ 300,000

- Definition

Amount of tax expense (benefit) related to a discontinued operation. Includes, but is not limited to, tax expense (benefit) related to income (loss) from operations during the phase-out period, tax expense (benefit) related to gain (loss) on disposal, tax expense (benefit) related to gain (loss) for reversal of write-down (write-down) to fair value, less cost to sell, and tax expense (benefit) related to adjustments of a prior period gain (loss) on disposal.

+ References + Details

Related Party Transactions - Schedule of Related Party Transactions (Detail) - Affiliated Entity [Member] - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Related Party Transaction [Line Items]
Sales	$ 2,182	$ 1,924	$ 5,282	$ 4,661
Purchases	114	80	370	366
Rent	$ 163	$ 150	$ 472	$ 446

Related Party Transactions - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Thousands, shares in Millions		9 Months Ended
	Mar. 13, 2015	Sep. 30, 2015	Sep. 30, 2016	Dec. 31, 2015
Related Party Transaction [Line Items]
Share repurchase, amount		$ 6,100
Affiliated Entity [Member]
Related Party Transaction [Line Items]
Accounts receivable, related parties			$ 1,400	$ 1,800
M/I Homes Inc [Member]
Related Party Transaction [Line Items]
Accounts receivable, related parties			$ 800	$ 1,000
IBS [Member]
Related Party Transaction [Line Items]
Common Stock Repurchase, Shares	0.3
Share repurchase, amount	$ 6,100
Share repurchase, price per share	$ 19.23
Discount from last reported price of our common stock	7.50%

Commitments and Contingencies - Schedule of Accrued General Insurance Reserves (Detail) - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Commitments And Contingencies Disclosure [Abstract]
Included in other current liabilities	$ 1,667	$ 1,304
Included in other long-term liabilities	8,514	6,879
Total	$ 10,181	$ 8,183

Commitments and Contingencies - Schedule of General Liability Insurance Receivable for Claims (Detail) - General Liability [Member] - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Commitments And Contingencies Disclosure [Line Items]
Insurance receivable and indemnification asset for claims under a fully insured policy	$ 2,815	$ 2,815
Insurance receivable for claims that exceeded the stop loss limit	907	821
Total insurance receivables included in other non-current assets	$ 3,722	$ 3,636

Commitments and Contingencies - Additional Information (Detail) $ in Millions	3 Months Ended		9 Months Ended		12 Months Ended
	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) Contract	Sep. 30, 2015 USD ($)	Dec. 31, 2015 USD ($)
Commitments And Contingencies Disclosure [Line Items]
Capital lease assets	$ 64.7		$ 64.7		$ 64.9
Assets fully depreciated			23.1		19.1
Capital leased assets, net book value	17.8		17.8		22.1
Accumulated depreciation	46.9		46.9		$ 42.8
Actual purchases made under contract	$ 6.5	$ 16.6	$ 32.9	$ 41.5
Contract One [Member]
Commitments And Contingencies Disclosure [Line Items]
Extended term of contract			Dec. 31, 2016
Contract Two [Member]
Commitments And Contingencies Disclosure [Line Items]
Number of product supply contracts \| Contract			2
Extended term of contract			Aug. 31, 2017
Minimum [Member]
Commitments And Contingencies Disclosure [Line Items]
Estimated life of capital lease			4 years
Noncancellable operating leases, renewal period			1 year
Maximum [Member]
Commitments And Contingencies Disclosure [Line Items]
Estimated life of capital lease			6 years
Noncancellable operating leases, renewal period			5 years

Commitments and Contingencies - Future Minimum Lease Payments Under Noncancellable Operating Leases (Detail) $ in Thousands	Sep. 30, 2016 USD ($)
Commitments And Contingencies Disclosure [Abstract]
Remainder of 2016	$ 133
2017	366
2018	155
2019	0
2020	0
Thereafter	$ 0

Business Combinations - Additional Information (Detail) $ in Thousands												3 Months Ended		9 Months Ended
	Aug. 15, 2016 USD ($)	Jul. 25, 2016 USD ($)	Apr. 12, 2016 USD ($)	Feb. 29, 2016 USD ($)	Feb. 02, 2016 USD ($)	Jan. 25, 2016 USD ($)	Aug. 10, 2015 USD ($)	Jul. 01, 2015 USD ($)	Jun. 01, 2015 USD ($)	Apr. 06, 2015 USD ($)	Mar. 12, 2015 USD ($)	Sep. 30, 2016 USD ($)	Sep. 30, 2015 USD ($)	Sep. 30, 2016 USD ($) Business	Sep. 30, 2015 USD ($) Business
Business Acquisition [Line Items]
Business combinations \| Business														6	5
Goodwill acquired expected to be tax deductible												$ 12,800	$ 22,100	$ 12,800	$ 22,100
Purchase price paid in cash														36,427	71,040
Seller obligations in connection with acquisition of businesses														2,849	12,364
Revenue												225,392	181,579	629,003	471,220
Net income (loss)														27,355	17,230
Amortization of intangibles												2,889	1,817	8,178	4,091
Income tax expense (benefit)												6,723	4,869	14,792	9,612
Key Insulation [Member]
Business Acquisition [Line Items]
Purchase price paid in cash						$ 5,000
Seller obligations in connection with acquisition of businesses						$ 700
Revenue												2,000		6,300
Net income (loss)												(200)		(400)
Marshall Insulation LLC [Member]
Business Acquisition [Line Items]
Purchase price paid in cash					$ 900
Seller obligations in connection with acquisition of businesses					$ 100
Revenue												1,000		2,500
Net income (loss)												(54)		(200)
Kern Door Company [Member]
Business Acquisition [Line Items]
Purchase price paid in cash				$ 2,900
Seller obligations in connection with acquisition of businesses				$ 100
Revenue												1,000		2,000
Net income (loss)												(62)		(200)
BDI Insulation [Member]
Business Acquisition [Line Items]
Purchase price paid in cash											$ 30,700
Seller obligations in connection with acquisition of businesses											$ 5,800				5,765
Revenue													10,300		22,500
Net income (loss)													600		1,600
Ownership percentage acquired											100.00%
Insurance receivable for claims under a fully insured policy												2,000	2,000	2,000	2,000
Indemnification asset associated with the acquisition												1,600	1,600	1,600	1,600
Combined Business Acquisitions [Member]
Business Acquisition [Line Items]
Seller obligations in connection with acquisition of businesses														2,849	12,103
Amortization of intangibles												37	1,200	700	4,900
Income tax expense (benefit)												100	300	18	1,200
Transaction costs													1,000		1,000
Alpine [Member]
Business Acquisition [Line Items]
Purchase price paid in cash			$ 21,200
Seller obligations in connection with acquisition of businesses			$ 1,600											1,560
Revenue												7,900		14,700
Net income (loss)												800		1,200
FireClass, LLC [Member]
Business Acquisition [Line Items]
Purchase price paid in cash		$ 2,300
Revenue												800		800
Net income (loss)												21		21
Southern Insulators & Specialties LLC [Member]
Business Acquisition [Line Items]
Purchase price paid in cash	$ 4,100
Seller obligations in connection with acquisition of businesses	$ 400
Revenue												700		700
Net income (loss)												$ 100		$ 100
CQ Insulation [Member]
Business Acquisition [Line Items]
Purchase price paid in cash										$ 5,200
Seller obligations in connection with acquisition of businesses										$ 2,300					2,319
Revenue													2,700		5,400
Net income (loss)													300		500
Ownership percentage acquired										100.00%
Layman Brothers Contracting [Member]
Business Acquisition [Line Items]
Purchase price paid in cash									$ 9,100
Seller obligations in connection with acquisition of businesses									$ 600						600
Revenue													3,700		4,900
Net income (loss)													300		400
EcoLogic Energy Solutions [Member]
Business Acquisition [Line Items]
Purchase price paid in cash								$ 3,000
Seller obligations in connection with acquisition of businesses								$ 500
Revenue													1,800		1,800
Net income (loss)													36		36
Eastern Contractor Services [Member]
Business Acquisition [Line Items]
Purchase price paid in cash							$ 24,200
Seller obligations in connection with acquisition of businesses							$ 2,900								2,875
Revenue													3,000		3,000
Net income (loss)													$ 300		$ 300
Ownership percentage acquired							100.00%

Business Combinations - Summary of Estimated Fair Value of Assets Acquired and Liabilities Assumed (Detail) - USD ($) $ in Thousands						9 Months Ended
	Apr. 12, 2016	Aug. 10, 2015	Jun. 01, 2015	Apr. 06, 2015	Mar. 12, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Business Acquisition [Line Items]
Goodwill						$ 102,518		$ 90,512
Less seller obligations						2,849	$ 12,364
Alpine [Member]
Business Acquisition [Line Items]
Accounts receivable						3,959
Inventories						700
Other current assets						18
Property and equipment						656
Intangibles						12,800
Goodwill						6,624
Accounts payable and other current liabilities						(2,046)
Fair value of assets acquired and purchase price						22,711
Less seller obligations	$ 1,600					1,560
Cash paid						21,151
Other Acquisition [Member]
Business Acquisition [Line Items]
Accounts receivable						2,031	1,049
Inventories						888	119
Other current assets						12	10
Property and equipment						1,187	406
Intangibles						8,492	1,827
Goodwill						5,368	875
Other non-current assets						70	56
Accounts payable and other current liabilities						(1,459)	(783)
Deferred income tax liabilities						(24)
Fair value of assets acquired and purchase price						16,565	3,559
Less seller obligations						1,289	544
Cash paid						15,276	3,015
Combined Business Acquisitions [Member]
Business Acquisition [Line Items]
Cash							926
Accounts receivable						5,990	11,220
Inventories						1,588	1,853
Other current assets						30	526
Property and equipment						1,843	3,699
Intangibles						21,292	46,658
Goodwill						11,992	33,170
Other non-current assets						70	4,114
Accounts payable and other current liabilities						(3,505)	(8,336)
Deferred income tax liabilities						(24)	(5,495)
Long term debt							(82)
Other long-term liabilities							(3,975)
Fair value of assets acquired and purchase price						39,276	84,278
Less seller obligations						2,849	12,103
Cash paid						$ 36,427	72,175
BDI Insulation [Member]
Business Acquisition [Line Items]
Cash							661
Accounts receivable							4,735
Inventories							980
Other current assets							368
Property and equipment							1,006
Intangibles							21,280
Goodwill							16,213
Other non-current assets							3,736
Accounts payable and other current liabilities							(3,303)
Deferred income tax liabilities							(5,495)
Other long-term liabilities							(3,736)
Fair value of assets acquired and purchase price							36,445
Less seller obligations					$ 5,800		5,765
Cash paid							30,680
Eastern Contractor Services [Member]
Business Acquisition [Line Items]
Cash							165
Accounts receivable							2,768
Inventories							335
Other current assets							109
Property and equipment							1,364
Intangibles							13,871
Goodwill							9,904
Other non-current assets							322
Accounts payable and other current liabilities							(1,681)
Long term debt							(82)
Other long-term liabilities							(1)
Fair value of assets acquired and purchase price							27,074
Less seller obligations		$ 2,900					2,875
Cash paid							24,199
CQ Insulation [Member]
Business Acquisition [Line Items]
Cash							100
Accounts receivable							1,423
Inventories							152
Other current assets							39
Property and equipment							190
Intangibles							4,350
Goodwill							3,035
Accounts payable and other current liabilities							(1,539)
Other long-term liabilities							(238)
Fair value of assets acquired and purchase price							7,512
Less seller obligations				$ 2,300			2,319
Cash paid							5,193
Layman Brothers Contracting [Member]
Business Acquisition [Line Items]
Accounts receivable							1,245
Inventories							267
Property and equipment							733
Intangibles							5,330
Goodwill							3,143
Accounts payable and other current liabilities							(1,030)
Fair value of assets acquired and purchase price							9,688
Less seller obligations			$ 600				600
Cash paid							$ 9,088

Business Combinations - Estimates of Acquired Intangible Assets (Detail) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015
Customer Relationships [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 12,862	$ 29,958
Weighted Avg Estimated Useful Life (yrs)	9 years	8 years
Trademarks and Trade Names [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 6,116	$ 12,882
Weighted Avg Estimated Useful Life (yrs)	15 years	15 years
Covenants Not-to-compete [Member]
Acquired Finite-Lived Intangible Assets [Line Items]
Estimated Fair Value	$ 2,314	$ 3,818
Weighted Avg Estimated Useful Life (yrs)	5 years	5 years

Business Combinations - Pro Forma Results of Operations (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Business Combination Increase Decrease To Reflect Liabilities Acquired At Fair Value [Abstract]
Net revenue	$ 226,329	$ 202,830	$ 642,343	$ 554,882
Net income attributable to common stockholders	$ 11,709	$ 10,211	$ 27,387	$ 19,353
Basic net income per share attributable to common stockholders	$ 0.37	$ 0.33	$ 0.88	$ 0.62
Diluted net income per share attributable to common stockholders	$ 0.37	$ 0.33	$ 0.87	$ 0.62

Income Per Common Share - Summary of Diluted Income Per Common Share (Detail) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015
Earnings Per Share [Abstract]
Net income attributable to common stockholders - basic and diluted	$ 11,549	$ 9,481	$ 27,355	$ 17,230
Weighted average number of common shares outstanding	31,323,600	31,237,275	31,294,596	31,318,682
Dilutive effect of outstanding common stock awards after application of the Treasury Stock Method	54,190	51,334	57,395	24,548
Diluted shares outstanding	31,377,790	31,288,609	31,351,991	31,343,230
Basic income per share attributable to common stockholders	$ 0.37	$ 0.30	$ 0.87	$ 0.55
Diluted income per share attributable to common stockholders	$ 0.37	$ 0.30	$ 0.87	$ 0.55

Subsequent Events - Additional Information (Detail) - USD ($) $ in Thousands				9 Months Ended
	Nov. 01, 2016	Oct. 29, 2016	Oct. 17, 2016	Sep. 30, 2016	Sep. 30, 2015
Subsequent Event [Line Items]
Seller obligations in connection with acquisition of businesses				$ 2,849	$ 12,364
Subsequent Event [Member] \| East Coast Insulators II, L.L.C [Member]
Subsequent Event [Line Items]
Consideration transferred for acquisition			$ 16,500
Subsequent Event [Member] \| Trilok Industries, Inc [Member]
Subsequent Event [Line Items]
Consideration transferred for acquisition		$ 92,100
Seller obligations in connection with acquisition of businesses		1,900
Subsequent Event [Member] \| Trilok Industries, Inc [Member] \| Common Stock [Member]
Subsequent Event [Line Items]
Purchase consideration, value of shares issued		$ 9,200
Purchase consideration, number of shares issued		282,577
Business acquisition in excess indebtedness payment to reduce purchase price.		$ 400
Subsequent Event [Member] \| Mike’s Garage Door, L.L.C [Member]
Subsequent Event [Line Items]
Consideration transferred for acquisition	$ 600