Commitments and Contingencies (Tables)

9 Months Ended

Sep. 30, 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 September 30, 2016 are as follows (in thousands):

Years ending December 31,
2016 (remaining three months)	$	3,320
2017	12,641
2018	11,952
2019	10,318
2020	7,598
Thereafter	10,551
Total	$	56,380

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 30, 2016			October 2, 2015			September 30, 2016			October 2, 2015
Balance at beginning of period	$	5,095		$	4,167		$	3,913		$	4,242
Balance assumed from TVN acquisition	—			—			1,012			—
Accrual for current period warranties	1,552			1,182			4,527			4,308
Changes in liability related to pre-existing warranties	(99		)	—			(173		)	(93		)
Warranty costs incurred	(1,469		)	(1,448		)	(4,200		)	(4,556		)
Balance at end of period	$	5,079		$	3,901		$	5,079		$	3,901