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Note 4 - Class A Convertible Preferred Units and Warrants - Preferred Units Activity (Details) - USD ($)
$ in Thousands
1 Months Ended 12 Months Ended
Sep. 30, 2024
May 31, 2024
Sep. 30, 2023
Aug. 31, 2023
Jun. 30, 2023
May 31, 2023
Feb. 28, 2023
Feb. 28, 2022
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Balance, units outstanding (in shares)                 71,666    
Balance, financial position                 $ 47,181    
Redemption of preferred units paid-in-kind, units outstanding (in shares)               19,321      
Redemption of preferred units (in shares) (31,666) (40,000) (15,001) (35,000) (45,000) (35,834) (47,499)   (71,666)    
Redemption of preferred units                 $ (47,181)    
Balance, units outstanding (in shares)                   71,666  
Balance, financial position                 $ 0 $ 47,181  
Preferred Partner [Member] | Preferred Stock [Member]                      
Balance, units outstanding (in shares)                 71,666 250,000 269,321
Balance, financial position                 $ 47,181 $ 164,587 $ 183,908
Redemption of preferred units paid-in-kind, units outstanding (in shares)                     (19,321)
Redemption of preferred units paid-in-kind, financial position                     $ (19,321)
Redemption of preferred units (in shares)                   (178,334)  
Redemption of preferred units                   $ (117,406)  
Balance, units outstanding (in shares)                 0 71,666 250,000
Balance, financial position                 $ 0 $ 47,181 $ 164,587