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Note 2 - Significant Accounting Policies (Details Textual) - USD ($)
Mar. 17, 2026
Mar. 31, 2026
Dec. 31, 2025
Jun. 30, 2025
Mar. 31, 2025
Contract with Customer, Asset, after Allowance for Credit Loss, Current   $ 454,408 $ 0 $ 428,585  
Financing Receivable, after Allowance for Credit Loss, Noncurrent   $ 3,000,000   $ 0  
Common Stock, Par or Stated Value Per Share (in dollars per share)   $ 0.01   $ 0.01  
Maximum [Member]          
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share)   $ 10     $ 10
SPAR Marketing Force, Inc [Member]          
Financing Receivable, after Allowance for Credit Loss, Noncurrent   $ 3,000,000      
SPAR Marketing Force, Inc [Member] | PC Group, Inc. [Member] | The Note [Member] | Unsecured Debt [Member]          
Debt Instrument, Maximum Borrowing Capacity $ 4,000,000        
Long-Term Debt 3,000,000        
Debt Instrument, Delayed Draw Capacity $ 1,000,000        
Debt Instrument, Interest Rate, Stated Percentage 8.00%        
Debt Instrument, Default Rate 12.00%        
Debt Instrument, Equity Consideration, Shares to be Issued (in shares) 1,000,000        
Debt Instrument, Equity Consideration, Shares to be Issued, Price Per Share (in dollars per share) $ 0.8        
Debt Instrument, Equity Consideration, Period of Issuance (Day) 30 days        
Debt Instrument, Maximum Aggregate Payments $ 800,000        
Debt Instrument, Maturity Date Mar. 16, 2029