Note 1 - Description of Business and Summary of Significant Accounting Policies - Reconciliation of Cash and Cash Equivalents to Cash, Cash Equivalents and Merchant Reserves (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Cash and cash equivalents	$ 7,255,321	$ 5,011,132
Prepaid card load assets	36,590,893	7,610,242
Customer deposits	1,364,193	1,305,296
Merchant reserves	6,381,153	8,265,555
Cash, cash equivalents, prepaid card loads, customer deposits and merchant reserves, beginning of year	51,591,560	22,192,225
Cash and cash equivalents	5,709,117	7,255,321
Prepaid card load assets	20,170,761	36,590,893
Customer deposits	1,554,122	1,364,193
Merchant reserves	4,909,501	6,381,153
Cash, Cash Equivalents, Prepaid Card Load Assets, Customer Deposits and Merchant Reserves, End of Year	$ 32,343,501	$ 51,591,560