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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 |  |  |

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