Note 2 - Summary of Significant Accounting Policies - Disaggregation of Revenue (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021
Revenues	$ 10,508,180	$ 9,057,866	$ 20,058,772	$ 16,506,266
Incentives and rebates	(130,228)	(113,850)	(241,322)	(161,697)
Net revenue	10,508,180	9,057,866	20,058,772	16,506,266
Insurance and Administration Fees [Member]
Revenues	5,753,866	4,659,596	10,899,137	8,407,795
Transaction Fees [Member]
Revenues	4,404,319	4,148,061	8,448,458	7,564,782
Other Fees [Member]
Revenues	$ 480,223	$ 364,059	$ 952,499	$ 695,386