Commitments and Contingencies (Tables)

3 Months Ended

Mar. 28, 2014

Commitments and Contingencies Disclosure [Abstract]

Future Minimum Lease Payments Under Non-cancelable Operating Leases

Future minimum lease payments under non-cancelable operating leases as of March 28, 2014, after giving effect to $0.4 million of future sublease income from Aurora, are as follows (in thousands):

Years ending December 31,
2014 (remaining nine months)	$	7,264
2015	9,416
2016	8,178
2017	7,703
2018	7,644
Thereafter	13,619
Total	$	53,824

Summary of Warranty Accrual Included in Accrued Liabilities

Activity for the Company’s warranty accrual, which is included in accrued liabilities, is summarized below (in thousands):

	Three months ended
	March 28, 2014			March 29, 2013
Balance at beginning of period	$	3,606		$	4,292
Transfer to Aurora as part of the sale of discontinued operations	—			(939		)
Accrual for current period warranties	1,749			1,394
Warranty costs incurred	(1,696		)	(1,477		)
Balance at end of period	$	3,659		$	3,270