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Organization - Summary of Annual Percentage of Installation Net Revenue by Product Category (Detail) - Customer Concentration Risk [Member] - Revenue [Member]	12 Months Ended
	Dec. 31, 2017	Dec. 31, 2016	Dec. 31, 2015
Concentration Risk [Line Items]
Net revenues percentage	100.00%	100.00%	100.00%
Insulation [Member]
Concentration Risk [Line Items]
Net revenues percentage	67.00%	77.00%	78.00%
Waterproofing [Member]
Concentration Risk [Line Items]
Net revenues percentage	8.00%	2.00%	2.00%
Shower doors, shelving and mirrors [Member]
Concentration Risk [Line Items]
Net revenues percentage	7.00%	5.00%	5.00%
Garage doors [Member]
Concentration Risk [Line Items]
Net revenues percentage	5.00%	6.00%	6.00%
Rain gutters [Member]
Concentration Risk [Line Items]
Net revenues percentage	4.00%	4.00%	5.00%
Other building products [Member]
Concentration Risk [Line Items]
Net revenues percentage	9.00%	6.00%	4.00%

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

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.

+ References

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

Reference 3: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 275
-SubTopic 10
-Section 50
-Paragraph 20
-URI http://asc.fasb.org/extlink&oid=84177426&loc=d3e6404-108592

Reference 4: http://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 825
-SubTopic 10
-Section 50
-Paragraph 21
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=77997519&loc=d3e13537-108611

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