Note 4 - Debt Obligations - Schedule of Debt (Details) - USD ($) $ in Thousands	Mar. 31, 2023	Dec. 31, 2022
Long-term debt, current	$ 66	$ 100
Debt discount, net of amortization	0	(3)
Total current portion of debt	66	100
Total long-term debt, net of current	302	237
Total	368	337
Vehicle Loan [Member]
Long-term debt, current	13	0
Total long-term debt, net of current	65	0
Paycheck Protection Program CARES Act [Member]
SBA Paycheck Protection Program loan	43	43
SBA Paycheck Protection Program loans, matures May 2025	97	97
Convertible Note, Maturing On March 1, 2023 [Member]
Convertible notes	0	50
Economic Injury Disaster Loan [Member]
Long-term debt, current	10	10
Total long-term debt, net of current	$ 140	$ 140

Carrying value as of the balance sheet date of the portion of long-term debt due within one year or the operating cycle if longer identified as Convertible Notes Payable. Convertible Notes Payable is a written promise to pay a note which can be exchanged for a specified amount of another, related security, at the option of the issuer and the holder.

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Amount of debt and lease obligation, classified as current.

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