Commitments and Contingencies (Tables)

6 Months Ended

Jun. 28, 2013

Commitments And Contingencies Disclosure [Abstract]

Future Minimum Lease Payments Under Non-cancelable Operating Leases

Future minimum lease payments under non-cancelable operating leases at June 28, 2013, after giving effect to $0.6 million of future sublease income from Aurora, are as follows (in thousands):

Years ending December 31,
2013 (remaining six months)	$	4,919
2014		7,833
2015		7,226
2016		7,353
2017		7,584
Thereafter		20,997
Total	$	55,912

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						Six months ended
	June 28, 2013			June 29, 2012			June 28, 2013			June 29, 2012
Balance at beginning of period	$	3,270		$	5,133		$	4,292		$	5,558
Transfer to Aurora as part of the sale of discontinued operations		—			—			(939	)		—
Accrual for current period warranties		1,948			1,474			3,342			3,093
Warranty costs incurred		(1,990	)		(1,882	)		(3,467	)		(3,926	)
Balance at end of period	$	3,228		$	4,725		$	3,228		$	4,725