Liabilities (Tables)

3 Months Ended

Mar. 31, 2015

Liabilities

Schedule of accrued expenses and other current liabilities

	March 31, 2015		December 31, 2014
	(in thousands)
Payroll and related benefits	$	16,706	$	26,605
Sales, use, and other taxes	2,159		1,776
Warranty	5,505		5,411
Restructuring liability	1,493		1,428
Professional fees	2,881		2,752
Other	7,747		10,446
Total accrued liabilities	$	36,491	$	48,418

Schedule of changes in warranty reserves

	(in thousands)
Warranty reserves - December 31, 2014	$	5,411
Warranties issued	1,470
Settlements made	(919		)
Changes in estimate	(457		)
Warranty reserves - March 31, 2015	$	5,505

Schedule of restructuring accrual

	Personnel
	Severance and			Facility
	Related Costs			Closing Costs			Total
	(in thousands)
Restructuring accrual - December 31, 2014	$	1,428		$	—		$	1,428
Provision	1,532			825			2,357
Payments	(1,839		)	(453		)	(2,292		)
Restructuring accrual - March 31, 2015	$	1,121		$	372		$	1,493