Commitments and Contingencies (Tables)

9 Months Ended

Sep. 28, 2018

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 28, 2018 are as follows (in thousands):

Years ending December 31,
2018 (remaining three months)	$	3,433
2019	13,091
2020	9,921
2021	4,276
2022	2,525
Thereafter	9,325
Total	$	42,571

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 28, 2018			September 29, 2017			September 28, 2018			September 29, 2017
Balance at beginning of period	$	4,647		$	4,142		$	4,381		$	4,862
Accrual for current period warranties	1,563			1,354			5,013			3,849
Warranty costs incurred	(1,461		)	(1,155		)	(4,645		)	(4,370		)
Balance at end of period	$	4,749		$	4,341		$	4,749		$	4,341