Note 2 - Investments - Contractual Maturity of Fixed Income Securities (Details) - USD ($)	Sep. 30, 2020	Dec. 31, 2019
Due in one year or less, amortized cost	$ 1,275,943
Due in one year or less, fair value	1,305,900
Due after one year through five years, amortized cost	18,436,788
Due after one year through five years, fair value	19,612,776
Due after five years through 10 years, amortized cost	16,366,929
Due after five years through 10 years, fair value	18,431,137
Due after 10 years, amortized cost	21,586,567
Due after 10 years, fair value	23,678,509
Total fixed maturity securities, amortized cost	96,725,639	$ 88,348,415
Total fixed maturity securities, fair value	103,318,485	$ 92,087,572
Collateralized Mortgage Backed Securities [Member]
Securities without a specific due date, amortized cost	38,843,607
Securities without a specific due date, fair value	40,057,464
Redeemable Preferred Stock [Member]
Securities without a specific due date, amortized cost	215,805
Securities without a specific due date, fair value	232,699
Total fixed maturity securities, amortized cost	215,805
Total fixed maturity securities, fair value	$ 232,699