Note 1 - Basis of Presentation - Reconciliation of Cash and Cash Equivalents to Cash, Cash Equivalents and Merchant Reserves (Details) - USD ($)	Jun. 30, 2020	Dec. 31, 2019	Jun. 30, 2019
Cash and cash equivalents	$ 2,137,580	$ 2,635,416	$ 2,159,698
Prepaid card load assets	528,434	641,095	535,479
Merchant reserves	10,016,904	11,074,891	12,645,803
Cash, cash equivalents, prepaid card load assets and merchant reserves, beginning of period	12,682,918	14,351,402	15,340,980
Cash and cash equivalents	1,793,252	2,137,580	2,635,416
Prepaid card load assets	19,281,293	528,434	641,095
Merchant reserves	8,430,339	10,016,904	11,074,891
Cash, Cash Equivalents, Prepaid Card Load Assets and Merchant Reserves, End of Period	$ 29,504,884	$ 12,682,918	$ 14,351,402