Quarterly report [Sections 13 or 15(d)]

Note 2 - Summary of Significant Accounting Policies (Details Textual)

v3.25.3
Note 2 - Summary of Significant Accounting Policies (Details Textual)
 2 Months Ended 3 Months Ended 9 Months Ended
Oct. 22, 2025
USD ($)
Oct. 20, 2025
shares
Jun. 09, 2025
USD ($)
$ / shares
shares
Nov. 30, 2025
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2024
USD ($)
Sep. 30, 2025
USD ($)
Sep. 30, 2024
USD ($)
Dec. 31, 2024
USD ($)
Debt, Current         $ 1,500,000   $ 1,500,000    
Debt Conversion, Converted Instrument, Amount         4,700,000   4,920,000 $ 0  
Deposit Liabilities, Accrued Interest         $ 4,000,000   $ 4,000,000    
Operating Expenses, Percent of Change         29.00%   24.00%    
Contract with Customer, Asset, after Allowance for Credit Loss         $ 598,000   $ 598,000   $ 372,000
Contract with Customer, Liability         813,000   813,000   50,000
Advertising Expense         $ 46,000 $ 0 $ 68,000 56,000  
Finite-Lived Intangible Asset, Useful Life         5 years   5 years    
Number of Reportable Segments         1        
Share-Based Payment Arrangement, Expense         $ 613,000 356,000 $ 1,372,000 986,000  
Payments of Financing Costs         $ 415,000   554,000    
Debt Financing Costs Expensed As Incurred           $ 0   $ 0  
Number of Operating Segments         1        
Unrecognized Tax Benefits         $ 0   0   0
Prepaid Expenses and Other Current Assets [Member]                  
Deferred Costs, Current         $ 832,000   $ 832,000   $ 64,000
2025 Omnibus Equity Incentive Plan [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) | shares     70,900            
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount, Canceled     $ 408,000            
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)     2 years            
Total Compensation Costs, Recognized and Not Yet Recognized     $ 307,000            
Share-Based Payment Arrangement, Expense     165,000            
Share-Based Payment Arrangement, Nonvested Award, Option, Cost Not yet Recognized, Amount     $ 141,000            
Restricted Stock Units (RSUs) [Member] | 2025 Omnibus Equity Incentive Plan [Member]                  
Common Stock, Capital Shares Reserved for Future Issuance (in shares) | shares     75,000            
Percentage of Reserved Shares     100.00%            
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) | shares     30,796            
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Nonvested, Weighted Average Grant Date Fair Value (in dollars per share) | $ / shares     $ 5.08            
Restricted Stock Units (RSUs) [Member] | Super League 2014 Stock Option and Incentive Plan [Member]                  
Common Stock, Capital Shares Reserved for Future Issuance (in shares) | shares     3,204            
Share-Based Payment Arrangement [Member] | Super League 2014 Stock Option and Incentive Plan [Member]                  
Common Stock, Capital Shares Reserved for Future Issuance (in shares) | shares     3,708            
Share-Based Payment Arrangement, Option [Member] | 2025 Omnibus Equity Incentive Plan [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares) | shares     40,104            
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Outstanding, Weighted Average Exercise Price (in dollars per share) | $ / shares     $ 5.08            
Share-Based Payment Arrangement, Option [Member] | Super League 2014 Stock Option and Incentive Plan [Member]                  
Common Stock, Capital Shares Reserved for Future Issuance (in shares) | shares     8,433            
Computer Software, Intangible Asset [Member]                  
Finite-Lived Intangible Asset, Useful Life         3 years   3 years    
Minimum [Member]                  
Finite-Lived Intangible Asset, Useful Life         3 years   3 years    
Maximum [Member]                  
Finite-Lived Intangible Asset, Useful Life         10 years   10 years    
Subsequent Event [Member]                  
Debt Conversion, Converted Instrument, Amount       $ 4,000,000          
Subsequent Event [Member] | 2025 Omnibus Equity Incentive Plan [Member]                  
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Additional Shares Authorized (in shares) | shares   6,967,863              
Pipe Purchase Agreement [Member] | Subsequent Event [Member]                  
Proceeds from Issuance or Sale of Equity $ 20,000,000                
Proceeds from Issuance of Sale of Equity, Net $ 18,500,000