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Organization - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2018 Location Segment	Dec. 31, 2017	Dec. 31, 2016
Basis Of Presentation And Organization [Line Items]
Number of operating segment | Segment	1
Revenue [Member] | Customer Concentration Risk [Member]
Basis Of Presentation And Organization [Line Items]
Net revenues percentage	100.00%	100.00%	100.00%
Revenue [Member] | Customer Concentration Risk [Member] | Residential New Construction and Repair and Remodel [Member]
Basis Of Presentation And Organization [Line Items]
Net revenues percentage	84.00%	83.00%	88.00%
Revenue [Member] | Customer Concentration Risk [Member] | Commercial New Construction and Repair and Remodel [Member]
Basis Of Presentation And Organization [Line Items]
Net revenues percentage	16.00%	17.00%	12.00%
United States [Member]
Basis Of Presentation And Organization [Line Items]
Number of locations the company operates | Location	175

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Basis Of Presentation And Organization [Line Items]

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For an entity that discloses a concentration risk in relation to quantitative amount, which serves as the "benchmark" (or denominator) in the equation, this concept represents the concentration percentage derived from the division.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
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Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

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