Significant Accounting Policies (Tables)

12 Months Ended

Dec. 31, 2018

Change in Accounting Principle

Summary of impact on adoption of accounting standards on previously reported financial position and results

		December 31, 2017
		As reported		Adjustments		As adjusted
	(in thousands)
Balance Sheet
Contract assets	$	—	$	160	$	160
Deferred cost of sales		16,060		(66)		15,994
Deferred income taxes		2,953		94		3,047
Accrued expenses and other current liabilities		60,339		(2,271)		58,068
Customer deposits and deferred revenue		108,953		3,079		112,032
Additional paid-in capital		1,053,079		(1,126)		1,051,953
Accumulated deficit		(213,376)		506		(212,870)

		Year ended December 31,
		2017						2016
		As reported		Adjustments		As adjusted		As reported		Adjustments		As adjusted
	(in thousands, except per share amounts)
Statement of Operations
Net sales		$	484,756	$	(9,070)	$	475,686	$	332,451	$	(749)	$	331,702
Cost of sales			300,438		(980)		299,458		199,593		(989)		198,604
Income tax expense (benefit)			(36,107)		(1,487)		(37,594)		2,766		57		2,823
Net income (loss)			(44,793)		(6,603)		(51,396)		(122,210)		183		(122,027)
Diluted earnings (loss) per share			(1.01)		(0.15)		(1.16)		(3.11)		0.01		(3.10)