Commitments and Contingencies (Tables)

9 Months Ended

Sep. 27, 2013

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 September 27, 2013, after giving effect to $0.5 million of future sublease income from Aurora, are as follows (in thousands):

Years ending December 31,
2013 (remaining three months)	$	2,645
2014	9,600
2015	9,047
2016	7,811
2017	7,659
Thereafter	21,157
Total	$	57,919

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						Nine months ended
	September 27, 2013			September 28, 2012			September 27, 2013			September 28, 2012
Balance at beginning of period	$	3,228		$	4,725		$	4,292		$	5,558
Transfer to Aurora as part of the sale of discontinued operations	—			—			(939		)	—
Accrual for current period warranties	1,991			1,314			5,333			4,407
Warranty costs incurred	(1,705		)	(1,677		)	(5,172		)	(5,603		)
Balance at end of period	$	3,514		$	4,362		$	3,514		$	4,362