Commitments and Contingencies (Tables)

3 Months Ended

Apr. 01, 2016

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 April 1, 2016 are as follows (in thousands):

Years ending December 31,
2016 (remaining nine months)	$	9,804
2017	13,000
2018	11,725
2019	10,212
2020	7,585
Thereafter	10,610
Total	$	62,936

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
	April 1, 2016			April 3, 2015
Balance at beginning of period	$	3,913		$	4,242
Balance assumed from TVN acquisition	1,012			—
Accrual for current period warranties	1,259			1,595
Changes in liability related to pre-existing warranties	—			—
Warranty costs incurred	(1,218		)	(1,746		)
Balance at end of period	$	4,966		$	4,091