Note 1 - Basis of Presentation - Reconciliation of Cash and Cash Equivalents to Cash, Cash Equivalents and Merchant Reserves (Details) - USD ($)	Sep. 30, 2021	Dec. 31, 2020	Sep. 30, 2020
Cash and cash equivalents	$ 5,011,132	$ 11,405,119	$ 2,137,580
Prepaid card load assets	7,610,242	7,906,580	528,434
Customer deposits	1,305,296	0	0
Merchant reserves	8,265,555	8,234,404	10,016,904
Cash, cash equivalents, prepaid card load assets, customer deposits and merchant reserves, beginning of period	22,192,225	27,546,103	12,682,918
Cash and cash equivalents	5,939,834	5,011,132	11,405,119
Prepaid card load assets	15,084,868	7,610,242	7,906,580
Customer deposits	1,505,324	1,305,296	0
Merchant reserves	7,261,153	8,265,555	8,234,404
Cash, Cash Equivalents, Prepaid Card Load Assets, Customer Deposits and Merchant Reserves, End of Period	$ 29,791,179	$ 22,192,225	$ 27,546,103