Balance Sheet Components - Accounts Receivable (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2018	Dec. 28, 2019
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Accounts receivable	$ 61,087	$ 65,023
Less: Allowance for doubtful accounts	(197)	(106)
Accounts receivable, net of allowance for doubtful accounts	60,890	$ 64,917
Accounts receivable, write-offs	$ 9,000