Note 9 - Fair Value Measurements - Fair Value Valuation Method Significant Unobservable Inputs (Details) $ in Thousands	Jan. 02, 2022 USD ($)
Investment in privately-held non-affiliate	$ 300,000
Total assets	300,000
Fair Value, Inputs, Level 1 [Member]
Investment in privately-held non-affiliate	0
Total assets	0
Fair Value, Inputs, Level 2 [Member]
Investment in privately-held non-affiliate	0
Total assets	0
Fair Value, Inputs, Level 3 [Member]
Investment in privately-held non-affiliate	300,000
Total assets	$ 0

Fair value portion of investment securities, including, but not limited to, marketable securities, derivative financial instruments, and investments accounted for under the equity method.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 820
-SubTopic 10
-Section 50
-Paragraph 2
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=123874694&loc=d3e19207-110258

Name:	us-gaap_InvestmentsFairValueDisclosure
Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant