Note 2 - Significant Events and Transactions (Details Textual) - USD ($) $ / shares in Units, $ in Thousands		3 Months Ended
	Nov. 06, 2023	Sep. 30, 2023	Jun. 30, 2023	Mar. 31, 2023
Stock Issued During Period, Shares, New Issues (in shares)		1,254
Stock Issued During Period, Value, New Issues		$ 13	$ 35	$ 15
East West Warrants [Member]
Warrants and Rights Outstanding, Term (Year)	5 years
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)	135,300
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)	$ 15
Proceeds from Issuance of Warrants, Gross	$ 1,000
Proceeds from Issuance of Warrants, Reduction From Extinguishment of Accounts Payable	950
Proceeds from Issuance of Warrants, Reduction for Obsolete Inventory	$ 50
Stock Purchase Agreement With East West Manufacturing, LLC [Member]
Stock Issued During Period, Shares, New Issues (in shares)	77,520
Stock Issued During Period, Value, New Issues	$ 1,000
Shares Issued, Price Per Share (in dollars per share)	$ 12.9