Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2020

Revenue from Contract with Customer [Abstract]

Summary of Revenues Disaggregated by End Market and Product

The following tables present our revenues disaggregated by end market and product (in thousands):

	Three months ended September 30,								Nine months ended September 30,
	2020				2019				2020				2019
Residential new construction	$	315,434	75	%	$	297,003	75	%	$	912,095	75	%	$	840,806	76	%
Repair and remodel		28,625	7	%		25,029	6	%		75,702	6	%		71,254	6	%
Commercial		76,427	18	%		74,417	19	%		223,959	19	%		198,338	18	%
Net revenues	$	420,486	100	%	$	396,449	100	%	$	1,211,756	100	%	$	1,110,398	100	%

	Three months ended September 30,								Nine months ended September 30,
	2020				2019				2020				2019
Insulation	$	268,292	64	%	$	253,311	64	%	$	779,045	64	%	$	710,005	64	%
Waterproofing		33,272	8	%		32,781	8	%		89,855	7	%		84,024	8	%
Shower doors, shelving and mirrors		29,282	7	%		27,011	7	%		85,199	7	%		77,828	7	%
Garage doors		24,001	6	%		22,336	6	%		68,655	6	%		65,790	6	%
Rain gutters		17,295	4	%		13,366	3	%		41,942	4	%		37,561	3	%
Window blinds		12,166	3	%		10,615	3	%		34,651	3	%		30,780	3	%
Other building products		36,178	8	%		37,029	9	%		112,409	9	%		104,410	9	%
Net revenues	$	420,486	100	%	$	396,449	100	%	$	1,211,756	100	%	$	1,110,398	100	%

Summary of Assets and Liabilities Related to Uncompleted Contracts and Customer Deposits

Contract assets and liabilities related to our uncompleted contracts and customer deposits were as follows (in thousands):

	September 30,			December 31,
	2020			2019
Contract assets	$	22,328		$	22,138
Contract liabilities		(11,237	)		(8,888	)

Schedule of Cost and Estimated Earnings on Uncompleted Contracts

Uncompleted contracts were as follows (in thousands):

	September 30,		December 31,
	2020		2019
Costs incurred on uncompleted contracts	$	136,522	$	110,818
Estimated earnings		75,338		61,185
Total		211,860		172,003
Less: Billings to date		196,640		155,599
Net under billings	$	15,220	$	16,404

Schedule of Net Under (Over) Billings

Net under billings were as follows (in thousands):

	September 30,			December 31,
	2020			2019
Costs and estimated earnings in excess of billings on uncompleted contracts (contract assets)	$	22,328		$	22,138
Billings in excess of costs and estimated earnings on uncompleted contracts (contract liabilities)		(7,108	)		(5,734	)
Net under billings	$	15,220		$	16,404