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Revenue Recognition - Summary of Revenues Disaggregated by End Market and Product (Detail) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2019	Mar. 31, 2018
Disaggregation of Revenue [Line Items]
Net revenues	$ 342,135	$ 301,728
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	$ 221,223	$ 202,275
Insulation [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	65.00%	67.00%
Waterproofing [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 22,385	$ 22,606
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	$ 23,917	$ 20,260
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	$ 21,672	$ 15,466
Garage Doors [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	6.00%	5.00%
Rain Gutters [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 11,199	$ 8,658
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	$ 9,384	$ 5,306
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	$ 32,355	$ 27,157
Other Building Products [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	9.00%	9.00%
Residential New Construction [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 261,310	$ 229,642
Residential New Construction [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	77.00%	76.00%
Repair and Remodel[Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 21,521	$ 20,472
Repair and Remodel[Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	6.00%	7.00%
Commercial [Member]
Disaggregation of Revenue [Line Items]
Net revenues	$ 59,304	$ 51,614
Commercial [Member] | Revenue [Member] | Customer Concentration Risk [Member]
Disaggregation of Revenue [Line Items]
Percentage of Net revenues	17.00%	17.00%

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