Note 6 - Accrued Expenses - Summary of Accrued Expenses (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Accrued commissions	$ 1,479,580	$ 879,120
Reserve for processing losses	755,494	623,494
Other accrued expenses	821,167	226,888
Accrued taxes	320,854	298,168
Accrued salaries	344,013	297,995
Total accrued expenses	$ 3,721,108	$ 2,325,665