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Revenue Recognition - Summary of Revenues Disaggregated by End Market and Product (Detail) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018	Jun. 30, 2019	Jun. 30, 2018
Disaggregation of Revenue [Line Items]
Net revenues	$ 371,814	$ 332,584	$ 713,949	$ 634,312
Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	100.00%	100.00%	100.00%	100.00%
Insulation [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 235,473	$ 218,493	$ 456,695	$ 420,768
Insulation [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	63.00%	66.00%	64.00%	67.00%
Waterproofing [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 28,858	$ 24,892	$ 51,243	$ 47,498
Waterproofing [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	8.00%	7.00%	7.00%	7.00%
Shower Doors, Shelving and Mirrors [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 26,900	$ 22,773	$ 50,817	$ 43,032
Shower Doors, Shelving and Mirrors [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	7.00%	7.00%	7.00%	7.00%
Garage Doors [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 21,782	$ 19,326	$ 43,454	$ 34,792
Garage Doors [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	6.00%	6.00%	6.00%	5.00%
Rain Gutters [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 12,996	$ 10,608	$ 24,195	$ 19,266
Rain Gutters [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	4.00%	3.00%	3.00%	3.00%
Window blinds [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 10,781	$ 8,079	$ 20,165	$ 13,385
Window blinds [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	3.00%	2.00%	3.00%	2.00%
Other Building Products [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 35,024	$ 28,413	$ 67,380	$ 55,571
Other Building Products [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	9.00%	9.00%	10.00%	9.00%
Residential New Construction [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 282,494	$ 257,904	$ 543,804	$ 487,546
Residential New Construction [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	76.00%	77.00%	76.00%	77.00%
Repair and Remodel[Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 24,705	$ 21,873	$ 46,225	$ 42,345
Repair and Remodel[Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	7.00%	7.00%	7.00%	7.00%
Commercial [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 64,615	$ 52,807	$ 123,920	$ 104,421
Commercial [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	17.00%	16.00%	17.00%	16.00%

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