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Note 1 - Description of Business and Summary of Significant Accounting Policies - Schedule of Disaggregation of Revenue (Details) - USD ($)
 12 Months Ended
Dec. 31, 2023
Dec. 31, 2022
Revenues $ 82,591,109 $ 69,428,285
Revenues, amount change $ 13,162,824  
Revenues, percent change 19.00%  
ACH and Complementary Service Revenue [Member]    
Revenues $ 14,888,973 14,782,606
Revenues, amount change $ 106,367  
Revenues, percent change 1.00%  
Credit Card Revenue [Member]    
Revenues $ 28,476,591 27,121,621
Revenues, amount change $ 1,354,970  
Revenues, percent change 5.00%  
Prepaid Card Services Revenue [Member]    
Revenues $ 18,729,350 9,117,670
Revenues, amount change $ 9,611,680  
Revenues, percent change 105.00%  
Output Solutions [Member]    
Revenues $ 20,496,195 $ 18,406,388
Revenues, amount change $ 2,089,807  
Revenues, percent change 11.00%