Commitments and Contingencies (Tables)

9 Months Ended

Sep. 29, 2017

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 29, 2017 are as follows (in thousands):

Years ending December 31,
2017 (remaining three months)	$	3,359
2018	13,053
2019	11,607
2020	8,218
2021	2,738
Thereafter	11,169
Total	$	50,144

Summary of Warranty Accrual Included in Accrued Liabilities

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

	Three months ended						Nine months ended
	September 29, 2017			September 30, 2016			September 29, 2017			September 30, 2016
Balance at beginning of period	$	4,142		$	5,095		$	4,862		$	3,913
Balance assumed from TVN acquisition	—			—			—			1,012
Accrual for current period warranties	1,354			1,552			3,849			4,527
Changes in liability related to pre-existing warranties	—			(99		)	—			(173		)
Warranty costs incurred	(1,155		)	(1,469		)	(4,370		)	(4,200		)
Balance at end of period	$	4,341		$	5,079		$	4,341		$	5,079