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Note 2 - Significant Accounting Policies (Details Textual)
12 Months Ended
Mar. 01, 2022
USD ($)
ft²
Jul. 21, 2018
USD ($)
ft²
Jun. 30, 2024
USD ($)
$ / shares
shares
Jun. 30, 2023
USD ($)
$ / shares
shares
Jul. 01, 2019
USD ($)
Operating Lease, Liability, Current     $ 64,076 $ 58,771  
Operating Lease, Liability, Noncurrent     198,972 263,047  
Operating Lease, Right-of-Use Asset     250,306 310,796  
Contract with Customer, Asset, after Allowance for Credit Loss, Current     181,680 186,959  
Contract with Customer, Asset, after Allowance for Credit Loss, Noncurrent, Total     108,052 108,052  
Advertising Expense     $ 22,625 $ 20,735  
Common Stock, Par or Stated Value Per Share (in dollars per share) | $ / shares     $ 0.01 $ 0.01  
Class of Warrant or Right, Number of Securities Called by Warrants or Rights (in shares) | shares     1,108,805    
Antidilutive Securities Excluded from Computation of Earnings Per Share, Amount (in shares) | shares     0 23,737  
Minimum [Member]          
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares     $ 4    
Maximum [Member]          
Class of Warrant or Right, Exercise Price of Warrants or Rights (in dollars per share) | $ / shares     $ 10    
Located at 5258 South Commerce Drive [Member]          
Lessee, Operating Lease, Renewal Term (Year) 3 years        
Area of Real Estate Property (Square Foot) | ft² 5,000 9,800      
Operating Leases, Monthly Rent Expense $ 5,871 $ 10,200      
Lessee, Operating Lease, Term of Contract (Year)   3 years      
Percentage of Monthly Rent Increase Each Year 3.00%        
Cumulative Effect, Period of Adoption, Adjustment [Member]          
Operating Lease, Liability, Current         $ 82,517
Operating Lease, Liability, Noncurrent         760,172
Operating Lease, Right-of-Use Asset         $ 842,689
Lessee, Operating Lease, Renewal Term (Year)         3 years
Accounts Receivable [Member]          
Number of Major Customers     1    
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer A & B [Member]          
Concentration Risk, Percentage     10.00%    
Accounts Receivable [Member] | Customer Concentration Risk [Member] | Customer A [Member]          
Accounts Receivable, after Allowance for Credit Loss     $ 962,300 $ 962,300