v3.26.1
Note 9 - Line of Credit (Details Textual) - Revolving Credit Facility [Member] - USD ($)
Sep. 07, 2021
Jun. 30, 2026
Mar. 31, 2026
Jun. 15, 2018
Line of Credit Facility, Maximum Borrowing Capacity       $ 400,000
Line of Credit Facility, Expiration Date May 15, 2026      
Debt Instrument, Interest Rate, Stated Percentage   7.62%    
Short-Term Debt, Total   $ 379,293 $ 377,446