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Note 11 - Commitments and Contingencies (Details Textual)
12 Months Ended
Mar. 01, 2022
USD ($)
ft²
May 01, 2019
USD ($)
Jun. 21, 2018
USD ($)
ft²
Jun. 30, 2022
USD ($)
Located at 5252 South Commerce Drive [Member]        
Area of Real Estate Property (Square Foot) | ft² 5,000   9,800  
Lessee, Operating Lease, Term of Contract (Year)     3 years  
Operating Leases, Monthly Rent Expense $ 5,871   $ 10,200  
Lessee, Operating Lease, Renewal Term (Year) 3 years      
Percentage of Monthly Rent Increase Each Year 3.00%      
U.S. Bank [Member]        
Repayments of Long-Term Debt, Total       $ 960,208
Interest Paid, Including Capitalized Interest, Operating and Investing Activities, Total       64,721
Repayments of Long Term Debt, Penalty       $ 0
Lease Amount of Funds Borrowed [Member] | U.S. Bank [Member]        
Long-Term Debt, Total   $ 1,269,000    
Debt Instrument, Term (Month)   48 months    
Debt Instrument, Interest Rate, Stated Percentage   5.00%    
Debt Instrument, Periodic Payment, Total   $ 29,097