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Revenue Recognition - Summary of Revenues Disaggregated by End Market and Product (Detail) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018
Disaggregation of Revenue [Line Items]
Net revenues	$ 396,449	$ 348,999	$ 1,110,398	$ 983,311
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	$ 253,311	$ 225,503	$ 710,005	$ 646,270
Insulation [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	64.00%	65.00%	64.00%	66.00%
Waterproofing [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 32,781	$ 25,980	$ 84,024	$ 73,477
Waterproofing [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	8.00%	7.00%	8.00%	7.00%
Shower Doors, Shelving and Mirrors [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 27,011	$ 23,190	$ 77,828	$ 66,222
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	$ 22,336	$ 21,781	$ 65,790	$ 56,574
Garage Doors [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	6.00%	6.00%	6.00%	6.00%
Rain Gutters [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 13,366	$ 12,163	$ 37,561	$ 31,429
Rain Gutters [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	3.00%	4.00%	3.00%	3.00%
Window blinds [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 10,615	$ 7,811	$ 30,780	$ 21,196
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	$ 37,029	$ 32,571	$ 104,410	$ 88,143
Other Building Products [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	9.00%	9.00%	9.00%	9.00%
Residential New Construction [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 297,003	$ 268,254	$ 840,806	$ 755,800
Residential New Construction [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	75.00%	77.00%	76.00%	77.00%
Repair and Remodel[Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 25,029	$ 23,107	$ 71,254	$ 65,453
Repair and Remodel[Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	6.00%	7.00%	6.00%	7.00%
Commercial [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 74,417	$ 57,638	$ 198,338	$ 162,058
Commercial [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	19.00%	16.00%	18.00%	16.00%

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