Note 1 - Basis of Presentation - Reconciliation of Cash and Cash Equivalents to Cash, Cash Equivalents and Merchant Reserves (Details) - USD ($)	Mar. 31, 2023	Dec. 31, 2022	Mar. 31, 2022	Dec. 31, 2021	Mar. 31, 2021
Cash and cash equivalents	$ 5,709,117			$ 7,590,951	$ 7,255,321
Prepaid card load assets	20,170,761			28,846,980	36,590,893
Customer deposits	1,554,122			1,391,465	1,364,193
Merchant reserves	4,909,501			6,386,153	6,381,153
Cash, cash equivalents, prepaid card load assets, customer deposits and merchant reserves, beginning of period	32,343,501	$ 44,215,549	$ 51,591,560	44,215,549	51,591,560
Cash and cash equivalents	6,763,813	5,709,117			7,590,951
Prepaid card load assets	18,812,954	20,170,761			28,846,980
Customer deposits	1,575,075	1,554,122			1,391,465
Merchant reserves	4,744,615	4,909,501			6,386,153
Cash, Cash Equivalents, Prepaid Card Load Assets, Customer Deposits and Merchant Reserves, End of Period	$ 31,896,457	$ 32,343,501	$ 44,215,549	$ 51,591,560	$ 44,215,549