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Revenue Recognition - Summary of Revenues Disaggregated by End Market and Product (Detail) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2019	Sep. 30, 2019	Jun. 30, 2019	Mar. 31, 2019	Dec. 31, 2018	Sep. 30, 2018	Jun. 30, 2018	Mar. 31, 2018	Dec. 31, 2019	Dec. 31, 2018	Dec. 31, 2017
Disaggregation of Revenue [Line Items]
Net revenues	$ 401,231	$ 396,449	$ 371,814	$ 342,135	$ 353,121	$ 348,999	$ 332,584	$ 301,728	$ 1,511,629	$ 1,336,432	$ 1,132,927
Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues									100.00%	100.00%
Insulation [Member]
Disaggregation of Revenue [Line Items]
Net revenues									$ 970,070	$ 876,118
Insulation [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues									64.00%	66.00%
Waterproofing [Member]
Disaggregation of Revenue [Line Items]
Net revenues									$ 112,075	$ 97,683
Waterproofing [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues									7.00%	7.00%
Shower Doors, Shelving and Mirrors [Member]
Disaggregation of Revenue [Line Items]
Net revenues									$ 105,745	$ 90,352
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%
Garage Doors [Member]
Disaggregation of Revenue [Line Items]
Net revenues									$ 89,959	$ 79,539
Garage Doors [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues									6.00%	6.00%
Rain Gutters [Member]
Disaggregation of Revenue [Line Items]
Net revenues									$ 49,788	$ 44,203
Rain Gutters [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues									3.00%	3.00%
Window blinds [Member]
Disaggregation of Revenue [Line Items]
Net revenues									$ 41,641	$ 28,981
Window blinds [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues									3.00%	2.00%
Other Building Products [Member]
Disaggregation of Revenue [Line Items]
Net revenues									$ 142,351	$ 119,556
Other Building Products [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues									10.00%	9.00%
Residential New Construction [Member]
Disaggregation of Revenue [Line Items]
Net revenues									$ 1,138,475	$ 1,026,473
Residential New Construction [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues									75.00%	77.00%
Repair and Remodel[Member]
Disaggregation of Revenue [Line Items]
Net revenues									$ 98,771	$ 89,977
Repair and Remodel[Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues									7.00%	7.00%
Commercial [Member]
Disaggregation of Revenue [Line Items]
Net revenues									$ 274,383	$ 219,982
Commercial [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues									18.00%	16.00%

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