Note 6 - Intangible Assets - Schedule of Carrying Value of Intangible Assets (Details) - USD ($) $ in Thousands	Mar. 31, 2024	Dec. 31, 2023
Intangible assets	$ 1,156	$ 1,156
Less: Accumulated amortization	(646)	(619)
Net Carrying Amount	510	$ 537
Sensi ML [Member]
Intangible assets	1,156
Less: Accumulated amortization	(646)
Net Carrying Amount	$ 510
Sensi ML [Member] | Developed Technology Rights [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	4 years 9 months
Intangible assets	$ 959
Less: Accumulated amortization	(503)
Net Carrying Amount	456
Sensi ML [Member] | Customer Relationships [Member]
Intangible assets	81
Less: Accumulated amortization	(81)
Net Carrying Amount	$ 0
Sensi ML [Member] | Trademarks and Trade Names [Member]
Finite-Lived Intangible Asset, Useful Life (Year)	4 years 9 months
Intangible assets	$ 116
Less: Accumulated amortization	(62)
Net Carrying Amount	$ 54