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Note 11 - Unsecured Convertible Notes (Details Textual)
1 Months Ended 12 Months Ended
Feb. 03, 2023
USD ($)
$ / shares
shares
Aug. 11, 2021
shares
Feb. 21, 2017
USD ($)
Jul. 31, 2022
USD ($)
shares
Mar. 31, 2024
USD ($)
$ / shares
Mar. 31, 2023
USD ($)
$ / shares
Mar. 31, 2022
USD ($)
$ / shares
Dec. 18, 2017
USD ($)
Gain (Loss) on Extinguishment of Debt         $ (0) $ (1,034,000)    
Adjustments to Additional Paid in Capital, Convertible Debt with Conversion Feature         $ 4,752,000      
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares         $ 0.001 $ 0.001    
Trinad Capital [Member] | Convertible Debt [Member]                
Debt Instrument, Interest Rate, Stated Percentage 8.50%           8.50%  
Debt Instrument, Convertible, Conversion Price (in dollars per share) | $ / shares             $ 3  
Debt Instrument, Face Amount               $ 1,100,000
Interest Payable           $ 300,000 $ 300,000  
Trinad Capital [Member] | Convertible Debt [Member] | Series A Preferred Stock [Member]                
Preferred Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares $ 0.001              
Trinad Capital [Member] | Convertible Debt [Member] | HSCPM Note [Member]                
Debt Instrument, Face Amount $ 10,503,965              
Trinad Capital [Member] | Convertible Debt [Member] | HSCP Note [Member]                
Debt Instrument, Face Amount 4,496,035              
Trinad Capital [Member] | Convertible Debt [Member] | Trinidad Notes [Member]                
Debt Instrument, Face Amount $ 6,177,218              
Trinad Capital [Member] | Convertible Debt [Member] | Embedded Derivative Financial Instruments [Member]                
Derivative, Notional Amount       $ 200,000        
Trinad Capital [Member] | Convertible Debt [Member] | Embedded Derivative Financial Instruments [Member] | Measurement Input, Share Price [Member]                
Derivative Asset (Liability) Net, Measurement Input       0.71        
Trinad Capital [Member] | Convertible Debt [Member] | Embedded Derivative Financial Instruments [Member] | Measurement Input, Exercise Price [Member]                
Derivative Asset (Liability) Net, Measurement Input       3        
Trinad Capital [Member] | Convertible Debt [Member] | Embedded Derivative Financial Instruments [Member] | Measurement Input, Price Volatility [Member]                
Derivative Asset (Liability) Net, Measurement Input       0.848        
Trinad Capital [Member] | Convertible Debt [Member] | Embedded Derivative Financial Instruments [Member] | Measurement Input, Risk Free Interest Rate [Member]                
Derivative Asset (Liability) Net, Measurement Input       0.0409        
Trinad Capital [Member] | Convertible Debt [Member] | Conversion of Original Trinidad Loan [Member]                
Debt Conversion, Converted Instrument, Amount     $ 3,600,000          
Trinad Capital [Member] | Convertible Debt [Member] | Amendment Agreement [Member]                
Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares   33,654            
Gain (Loss) on Extinguishment of Debt           (4,300,000)    
Adjustments to Additional Paid in Capital, Convertible Debt with Conversion Feature           4,200,000    
Trinad Capital [Member] | Convertible Debt [Member] | Conversion of Debt to Restricted Stock [Member]                
Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares       500,000        
Trinad Capital [Member] | Convertible Debt [Member] | Conversion of Debt to Series A Preferred Stock [Member]                
Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares 21,177              
Trinad Capital [Member] | Convertible Debt [Member] | Harvest Shares Conversion [Member]                
Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares 625,000              
Trinad Capital [Member] | Convertible Debt [Member] | Trinidad Capital Conversion [Member]                
Debt Conversion, Converted Instrument, Shares Issued (in shares) | shares 200,000              
Gain (Loss) on Extinguishment of Debt           $ (500,000)