Balance Sheet Components - Accounts Receivable, Net (Details) - USD ($) $ in Thousands	Jun. 26, 2020	Dec. 31, 2019
Receivables [Abstract]
Accounts receivable	$ 77,163	$ 91,513
Less: allowances for doubtful accounts and sales returns	(2,382)	(3,013)
Accounts Receivable, after Allowance for Credit Loss, Current	$ 74,781	$ 88,500

Amount, after allowance for credit loss, of right to consideration from customer for product sold and service rendered in normal course of business, classified as current.

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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
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