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, 2021	Dec. 31, 2020
Cash and cash equivalents	$ 5,011,132	$ 2,137,580
Prepaid card load assets	7,610,242	528,434
Customer deposits	1,305,296	0
Merchant reserves	8,265,555	10,016,904
Cash, cash equivalents, prepaid card loads, customer deposits and merchant reserves, beginning of year	22,192,225	12,682,918
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 Load Assets, Customer Deposits and Merchant Reserves, End of Year	$ 51,591,560	$ 22,192,225