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Organization - Additional Information (Detail)	12 Months Ended
	Dec. 31, 2017 Location Segment	Dec. 31, 2016	Dec. 31, 2015
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	83.00%	88.00%	89.00%
Revenue [Member] | Customer Concentration Risk [Member] | Commercial New Construction and Repair and Remodel [Member]
Basis Of Presentation And Organization [Line Items]
Net revenues percentage	17.00%	12.00%	11.00%
United States [Member]
Basis Of Presentation And Organization [Line Items]
Number of locations the company operates | Location	125

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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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 18
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6351-108592

Reference 2: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13531-108611

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-Name Accounting Standards Codification
-Topic 275
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-Topic 825
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-Paragraph 21
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-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611

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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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