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Note 1 - Nature of Business, Financial Condition, Basis of Presentation (Details Textual)
$ in Thousands
3 Months Ended 6 Months Ended
Jan. 06, 2023
Dec. 31, 2023
USD ($)
Sep. 30, 2023
USD ($)
Dec. 31, 2022
USD ($)
Sep. 30, 2022
USD ($)
Dec. 31, 2023
USD ($)
Dec. 31, 2022
USD ($)
Jun. 30, 2023
USD ($)
Number of Operating Segments           2    
Cash, Cash Equivalents, Restricted Cash, and Restricted Cash Equivalents   $ 19,500       $ 19,500    
Accounts Receivable, after Allowance for Credit Loss, Current   29,403       29,403   $ 28,937
Net Income (Loss) Attributable to Parent   (220) $ (8,120) $ (6,693) $ (701) (8,340) $ (7,394)  
Retained Earnings (Accumulated Deficit)   (312,469)       (312,469)   $ (304,129)
Net Cash Provided by (Used in) Operating Activities           (346) $ (11,588)  
Avenue Note [Member]                
Debt Instrument, Face Amount   $ 15,000       $ 15,000    
Reverse Stock Split [Member]                
Stockholders' Equity Note, Stock Split, Conversion Ratio 20