Commitments and Contingencies (Tables)

3 Months Ended

Mar. 31, 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 March 31, 2017 are as follows (in thousands):

Years ending December 31,
2017 (remaining nine months)	$	9,899
2018	12,624
2019	10,817
2020	7,474
2021	2,067
Thereafter	8,054
Total	$	50,935

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
	March 31, 2017			April 1, 2016
Balance at beginning of period	$	4,862		$	3,913
Balance assumed from TVN acquisition	—			1,012
Accrual for current period warranties	1,218			1,259
Warranty costs incurred	(1,495		)	(1,218		)
Balance at end of period	$	4,585		$	4,966