Note 4 - Balance Sheet Components (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Jan. 01, 2023	Jan. 02, 2022
Property, Plant and Equipment, Gross	$ 22,199	$ 14,016
Depreciation, Amortization and Accretion, Net	1,807	1,147	$ 1,004
Interest Costs Capitalized	0	0	0
Capitalized Computer Software, Amortization	600	400	300
Accounts Receivable, after Allowance for Credit Loss	100		$ 1,000
Pre-Product Design And Development [Member]
Property, Plant and Equipment, Gross	$ 7,090	$ 0