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Note 8 - Convertible Note (Details Textual)
3 Months Ended
May 19, 2025
USD ($)
$ / shares
Jun. 30, 2025
USD ($)
Initial Debentures [Member] | Convertible Debt [Member]    
Debt Instrument, Face Amount $ 16,775,000  
Debt Instrument, Repurchase Amount 15,250,000  
Debt Instrument, Additional Principal Option $ 11,000,000  
Debt Instrument, Covenant, Prepayment Premium, After May 19, 2026 and Before May 19, 2027 5.00%  
Debt Instrument, Covenant, Prepayment Premium, After May 19, 2027 and Before Maturity 4.00%  
Debt Instrument, Change in Control Transaction, Additional Payment Percentage 10.00%  
Debt Instrument, Prepayment on Initial Debenture $ 7,500,000  
Debt Instrument, Percentage, Initial Net Proceeds from Disposition 50.00%  
Debt Instrument, Amount, Initial Net Proceeds from Disposition $ 1,000,000  
Debt Instrument, Amount, Maximum Proceeds from Initial Disposition $ 1,000,000  
Debt Instrument, Percentage, Disposition of Debt Thereafter 25.00%  
Debt Instrument, Amount, Excess Amount $ 1,000,000  
Debt Instrument, Unamortized Discount 1,600,000  
Amortization of Debt Discount (Premium)   $ 100,000
Interest Expense, Debt   $ 200,000
Debt Instrument, Covenant, Cash Amount $ 7,500,000  
Senior Secured Convertible Debt [Member]    
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares $ 2.1  
Debt Instrument, Convertible, Stock Price Trigger (in dollars per share) | $ / shares $ 4.2  
Debt Instrument, Convertible, Threshold Consecutive Trading Days 30  
Debt Instrument Convertible Debt, Free Cash Flow $ 3,000,000  
Securities Purchase Agreement [Member]    
Debt Instrument, Interest Rate, Stated Percentage 11.75%  
Securities Purchase Agreement [Member] | Convertible Debt [Member] | Debt Instrument, Redemption, Period One [Member]    
Debt Instrument, Redemption Amount $ 100,000  
Securities Purchase Agreement [Member] | Convertible Debt [Member] | Debt Instrument, Redemption, Period Two [Member]    
Debt Instrument, Redemption Amount 150,000  
Securities Purchase Agreement [Member] | Convertible Debt [Member] | Debt Instrument, Redemption, Period Three [Member]    
Debt Instrument, Redemption Amount 250,000  
Securities Purchase Agreement [Member] | Convertible Debt [Member] | Debt Instrument, Redemption, Period Four [Member]    
Debt Instrument, Redemption Amount $ 300,000