Revenue Recognition (Tables)

12 Months Ended

Dec. 31, 2020

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


	Years ended December 31,
	2020				2019				2018
Residential new construction	$	1,243,498	75	%	$	1,138,475	75	%	$	1,026,473	77	%
Repair and remodel	106,784		7	%	98,771		7	%	89,977		7	%
Commercial	302,943		18	%	274,383		18	%	219,982		16	%
Net revenues	$	1,653,225	100	%	$	1,511,629	100	%	$	1,336,432	100	%


	Years ended December 31,
	2020				2019				2018
Insulation	$	1,058,316	64	%	$	970,070	64	%	$	876,118	66	%
Waterproofing	122,962		7	%	112,075		7	%	97,683		7	%
Shower doors, shelving and mirrors	117,131		7	%	105,745		7	%	90,352		7	%
Garage doors	93,516		6	%	89,959		6	%	79,539		6	%
Rain gutters	62,672		4	%	49,788		3	%	44,203		3	%
Fireproofing/firestopping (1)	49,648		3	%	41,845		3	%	36,589		3	%
Window blinds	46,984		3	%	41,641		3	%	28,981		2	%
Other building products	101,996		6	%	100,506		7	%	82,967		6	%
Net revenues	$	1,653,225	100	%	$	1,511,629	100	%	$	1,336,432	100	%
(1) Combined with "Other building products" in previous years but shown separately to conform with updated disclosures

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

Uncompleted contracts were as follows (in thousands):


	As of December 31,
	2020		2019
Costs incurred on uncompleted contracts	$	169,544	$	110,818
Estimated earnings	90,737		61,185
Total	260,281		172,003
Less: Billings to date	240,665		155,599
Net under billings	$	19,616	$	16,404

Net under billings were as follows (in thousands):


	As of December 31,
	2020		2019
Costs and estimated earnings in excess of billings on uncompleted contracts (contract assets)	$	24,334	$	22,138
Billings in excess of costs and estimated earnings on uncompleted contracts (contract liabilities)	(4,718)		(5,734)
Net under billings	$	19,616	$	16,404