Note 4 - Balance Sheet Components (Details Textual) - USD ($) $ in Thousands	12 Months Ended
	Dec. 29, 2024	Dec. 31, 2023	Jan. 01, 2023
Inventory, Work in Process, Noncurrent	$ 700
Inventory, Finished Goods, Noncurrent	28
Depreciation, Amortization and Accretion, Net	3,613	$ 1,807	$ 1,147
Interest Costs Capitalized	0	0	0
Capitalized Computer Software, Amortization	700	600	400
Accounts Receivable, after Allowance for Credit Loss	18,000		$ 2,700
Tooling [Member]
Preproduction Costs Related to Long-Term Supply Arrangements, Costs Capitalized	7,270	7,090
Die Wafers [Member]
Inventory, Work in Process, Gross	500	500
Unmarked Devices [Member]
Inventory, Work in Process, Gross	$ 1,000	$ 1,100