Revenue Recognition (Tables)

9 Months Ended

Sep. 30, 2021

Revenue from Contract with Customer [Abstract]

Summary of Revenues Disaggregated by End Market and Product

	Three months ended September 30,								Nine months ended September 30,
	2021				2020				2021				2020
Residential new construction	$	386,346	76	%	$	315,434	75	%	$	1,091,414	76	%	$	912,095	75	%
Repair and remodel	34,506		7	%	28,625		7	%	94,142		7	%	75,702		6	%
Commercial	88,911		17	%	76,427		18	%	249,371		17	%	223,959		19	%
Net revenue	$	509,763	100	%	$	420,486	100	%	$	1,434,927	100	%	$	1,211,756	100	%

	Three months ended September 30,								Nine months ended September 30,
	2021				2020				2021				2020
Insulation	$	324,360	64	%	$	268,292	64	%	$	921,181	64	%	$	779,045	64	%
Waterproofing	34,514		7	%	33,272		8	%	98,727		7	%	89,855		7	%
Shower doors, shelving and mirrors	35,411		7	%	29,282		7	%	101,830		7	%	85,199		7	%
Garage doors	26,951		5	%	24,001		6	%	77,434		5	%	68,655		6	%
Rain gutters	21,807		4	%	17,295		4	%	62,270		4	%	41,942		4	%
Fireproofing/firestopping(1)	17,684		3	%	11,047		2	%	43,156		3	%	36,325		3	%
Window blinds	13,197		3	%	12,166		3	%	37,398		3	%	34,651		3	%
Other building products	35,839		7	%	25,131		6	%	92,931		7	%	76,084		6	%
Net revenue	$	509,763	100	%	$	420,486	100	%	$	1,434,927	100	%	$	1,211,756	100	%

(1)Combined with "Other building products" in previous years.

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, 2021		December 31, 2020
Contract assets	$	32,265	$	24,334
Contract liabilities	(10,611)		(8,965)

Schedule of Cost and Estimated Earnings on Uncompleted Contracts

Uncompleted contracts were as follows (in thousands):

	September 30, 2021		December 31, 2020
Costs incurred on uncompleted contracts	$	216,929	$	169,544
Estimated earnings	112,854		90,737
Total	329,783		260,281
Less: Billings to date	301,626		240,665
Net under billings	$	28,157	$	19,616

Schedule of Net Under Billings

Net under billings were as follows (in thousands):

	September 30, 2021		December 31, 2020
Costs and estimated earnings in excess of billings on uncompleted contracts (contract assets)	$	32,265	$	24,334
Billings in excess of costs and estimated earnings on uncompleted contracts (contract liabilities)	(4,108)		(4,718)
Net under billings	$	28,157	$	19,616