Revenue Recognition and Contracts with Customers (Tables)

6 Months Ended

Jun. 30, 2018

Revenue from Contract with Customer [Abstract]

Revenue Based on Product Category

The following table provides information about our revenue differentiated based on product category (dollars in millions):

	Three Months Ended
	June 30, 2018
	Sales		% of sales
Product category:
Impact-resistant windows and door products	$	146.8		86.7	%
Non-Impact window and door products		22.5		13.3	%
Total net sales	$	169.3		100.0	%

	Six Months Ended
	June 30, 2018
	Sales		% of sales
Product category:
Impact-resistant window and door products	$	267.3		86.4	%
Non-impact window and door products		42.2		13.6	%
Total net sales	$	309.5		100.0	%

Contract Asset and Liability Balances

The following table provides information about contract asset and liability balances as of and for the three and six months ended June 30, 2018, and as of December 31, 2017, the first day of our 2018 fiscal year and the date of our adoption of ASU 2014-09 (in thousands):

						Contract
	Contract		Contract			Assets,
Three months ended June 30, 2018:	Assets		Liabilities			Net
At June 30, 2018	$	11,656	$	(644	)	$	11,012
At March 31, 2018		9,669		(459	)		9,210
Net increase	$	1,987	$	(185	)	$	1,802

						Contract
	Contract		Contract			Assets,
Six months ended June 30, 2018:	Assets		Liabilities			Net
At June 30, 2018	$	11,656	$	(644	)	$	11,012
At December 31, 2017		8,704		(528	)		8,176
Net increase	$	2,952	$	(116	)	$	2,836