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Note 11 - Long-term Debt (Details Textual) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 6 Months Ended
Jan. 26, 2022
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2023
Dec. 31, 2022
Jun. 30, 2023
Oct. 25, 2022
Mar. 07, 2022
Debt Instrument, Final Payment   $ 638   $ 638   $ 638    
Avenue Capital Issuance [Member]                
Shares Issued, Price Per Share (in dollars per share)               $ 25
Avenue Capital Warrants [Member]                
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) $ 24.2           $ 8.6 $ 24.2
Warrants and Rights Outstanding $ 600              
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares)               43,388
Avenue Capital Loan [Member]                
Debt Instrument, Face Amount $ 15,000              
Debt Instrument, Interest Rate, Stated Percentage 3.25%              
Debt Instrument, Final Payment $ 600              
Loan Processing Fee $ 400              
Debt Instrument, Interest Rate, Effective Percentage   19.60%   19.60%        
Interest Expense, Debt   $ 700 $ 700 $ 1,500 $ 1,300      
Avenue Capital Loan [Member] | After January 26, 2023 But Before January 26, 2024 [Member]                
Debt Instrument, Prepayment Fee, Percentage 2.00%              
Avenue Capital Loan [Member] | After January 26, 2024 But Before January 26, 2025 [Member]                
Debt Instrument, Prepayment Fee, Percentage 1.00%              
Avenue Capital Loan [Member] | Prime Rate [Member]                
Debt Instrument, Basis Spread on Variable Rate 7.40%