Revenue Recognition (Tables)

6 Months Ended

Jun. 30, 2018

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 June 30,								Six months ended June 30,
	2018				2017(1)				2018				2017(1)
Residential new construction	$	257,904	77	%	$	216,866	77	%	$	487,546	77	%	$	409,388	76	%
Repair and remodel		21,873	7	%		18,006	6	%		42,345	7	%		34,875	7	%
Commercial		52,807	16	%		47,324	17	%		104,421	16	%		93,602	17	%
Net revenues	$	332,584	100	%	$	282,196	100	%	$	634,312	100	%	$	537,865	100	%

	Three months ended June 30,								Six months ended June 30,
	2018				2017(1)				2018				2017(1)
Insulation	$	218,493	66	%	$	189,967	67	%	$	420,768	67	%	$	365,590	68	%
Waterproofing		24,892	7	%		22,119	8	%		47,498	7	%		43,124	8	%
Shower doors, shelving and mirrors		22,773	7	%		18,373	6	%		43,032	7	%		31,258	6	%
Garage doors		19,326	6	%		15,176	5	%		34,792	5	%		29,464	5	%
Rain gutters		10,608	3	%		10,188	4	%		19,266	3	%		18,630	3	%
Blinds		8,079	2	%		1,890	1	%		13,385	2	%		3,274	1	%
Other building products		28,413	9	%		24,483	9	%		55,571	9	%		46,525	9	%
Net revenues	$	332,584	100	%	$	282,196	100	%	$	634,312	100	%	$	537,865	100	%

⁽¹⁾  As noted above, prior period amounts have not been adjusted under the modified retrospective method.

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):

	June 30,			December 31,
	2018			2017
Contract assets	$	18,132		$	6,182
Contract liabilities		(6,900	)		(4,376	)

Schedule of Cost and Estimated Earnings on Uncompleted Contracts

Uncompleted contracts were as follows (in thousands):

	June 30,		Deember 31,
	2018		2017
Costs incurred on uncompleted contracts	$	109,643	$	79,235
Estimated earnings		57,995		44,035
Total		167,638		123,270
Less: Billings to date		153,687		121,464
Net under (over) billings	$	13,951	$	1,806

Schedule of Net Under (Over) Billings

Net under (over) billings were as follows (in thousands):

	June 30, 2018			December 31, 2017
Costs and estimated earnings in excess of billings on uncompleted contracts (contract assets)	$	18,132		$	6,182
Billings in excess of costs and estimated earnings on uncompleted contracts (contract liabilities)		(4,181	)		(4,376	)
Net under (over) billings	$	13,951		$	1,806