Note 3 - Accrued Expenses - Summary of Accrued Expenses (Details) - USD ($)	Mar. 31, 2022	Dec. 31, 2021
Accrued commissions	$ 795,729	$ 879,120
Reserve for processing losses	656,494	623,494
Other accrued expenses	536,530	226,888
Accrued taxes	375,527	298,168
Accrued salaries	479,930	297,995
Total accrued expenses	$ 2,844,210	$ 2,325,665