Note 4 - Balance Sheet Components - Accounts Receivable (Details) - USD ($) $ in Thousands	Jan. 01, 2022	Jan. 02, 2021
Accounts receivable	$ 79,859	$ 64,635
Less: Allowance for credit losses	0	(54)
Accounts receivable, net of allowance for credit losses	$ 79,859	$ 64,581

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.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Reference 2: http://www.xbrl.org/2003/role/disclosureRef
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Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant