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Note 1 - Nature of Organization and Operations (Details Textual)
$ / shares in Units, $ in Thousands
 1 Months Ended 3 Months Ended
Mar. 27, 2023
$ / shares
shares
Jul. 10, 2020
Mar. 31, 2023
USD ($)
$ / shares
shares
Sep. 30, 2018
Mar. 31, 2023
USD ($)
$ / shares
shares
Mar. 31, 2022
USD ($)
Mar. 26, 2023
shares
Dec. 31, 2022
USD ($)
$ / shares
shares
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares $ 0.01   $ 0.01   $ 0.01     $ 0.01
Common Stock, Shares Authorized (in shares) | shares 66,666,666   66,666,000   66,666,000   200,000,000 66,666,000
Retained Earnings (Accumulated Deficit)     $ (51,409)   $ (51,409)     $ (50,409)
Working Capital     (3,822)   (3,822)      
Cash and Cash Equivalents, at Carrying Value     $ 3,905   3,905     $ 1,633
Operating Income (Loss)         (90) $ (1,014)    
Net Cash Provided by (Used in) Operating Activities         $ 3,868 $ 1,201    
Reverse Stock Split [Member]                
Stockholders' Equity Note, Stock Split, Conversion Ratio 3 3 3 30 3