Note 6 - Intangible Assets - Schedule of Carrying Value of Intangible Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Jan. 01, 2023
Net Carrying Amount	$ 537
Sensi ML [Member]
Gross Carrying Amount	1,156	$ 1,156
Accumulated Amortization	(619)	(511)
Net Carrying Amount	$ 537	$ 645
Sensi ML [Member] | Developed Technology Rights [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	5 years	6 years
Gross Carrying Amount	$ 959	$ 959
Accumulated Amortization	(480)	(383)
Net Carrying Amount	479	576
Sensi ML [Member] | Customer Relationships [Member]
Gross Carrying Amount	81	81
Accumulated Amortization	(81)	(81)
Net Carrying Amount	$ 0	$ 0
Sensi ML [Member] | Trademarks and Trade Names [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	5 years	6 years
Gross Carrying Amount	$ 116	$ 116
Accumulated Amortization	(58)	(47)
Net Carrying Amount	$ 58	$ 69