Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Leases (Details Textual)

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Note 4 - Leases (Details Textual) - USD ($)
3 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Lessee, Operating Lease, Rent Escalations, Percentage 2.50%  
Operating Lease, Weighted Average Remaining Lease Term (Month) 32 months  
Operating Lease, Weighted Average Discount Rate, Percent 5.00%  
Operating Lease, Expense $ 38,053 $ 56,414
Minimum [Member]    
Lessee, Operating Lease, Term of Contract (Month) 37 months  
Maximum [Member]    
Lessee, Operating Lease, Term of Contract (Month) 67 months