Note 3 - Fair Value Measurements - Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($)	Mar. 31, 2020	Dec. 31, 2019
Investments in available-for-sale securities, at fair value	$ 40,560,227	$ 43,294,395
Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	40,560,227	43,294,395
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	6,041,863	9,802,333
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	34,326,764	33,300,462
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value	191,600	191,600
Fixed Maturities [Member]
Investments in available-for-sale securities, at fair value	32,872,792	33,152,892
Fixed Maturities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	32,872,792	33,152,892
Fixed Maturities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	652,219	632,639
Fixed Maturities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	32,028,973	32,328,653
Fixed Maturities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value	191,600	191,600
Fixed Maturities [Member] | US Treasury Securities [Member]
Investments in available-for-sale securities, at fair value	652,219	632,639
Fixed Maturities [Member] | US Treasury Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	652,219	632,639
Fixed Maturities [Member] | US Treasury Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	652,219	632,639
Fixed Maturities [Member] | US Treasury Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value
Fixed Maturities [Member] | US Treasury Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value
Fixed Maturities [Member] | Corporate Debt Securities [Member]
Investments in available-for-sale securities, at fair value	19,657,794	20,084,397
Fixed Maturities [Member] | Corporate Debt Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	19,657,794	20,084,397
Fixed Maturities [Member] | Corporate Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value
Fixed Maturities [Member] | Corporate Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	19,466,194	19,892,797
Fixed Maturities [Member] | Corporate Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value	191,600	191,600
Fixed Maturities [Member] | US States and Political Subdivisions Debt Securities [Member]
Investments in available-for-sale securities, at fair value	6,744,869	7,055,059
Fixed Maturities [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	6,744,869	7,055,059
Fixed Maturities [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value
Fixed Maturities [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	6,744,869	7,055,059
Fixed Maturities [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value
Fixed Maturities [Member] | Redeemable Preferred Stock [Member]
Investments in available-for-sale securities, at fair value	2,816,925	2,133,893
Fixed Maturities [Member] | Redeemable Preferred Stock [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	2,816,925	2,133,893
Fixed Maturities [Member] | Redeemable Preferred Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value
Fixed Maturities [Member] | Redeemable Preferred Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	2,816,925	2,133,893
Fixed Maturities [Member] | Redeemable Preferred Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value
Fixed Maturities [Member] | Collateralized Mortgage Backed Securities [Member]
Investments in available-for-sale securities, at fair value	3,000,985	3,246,904
Fixed Maturities [Member] | Collateralized Mortgage Backed Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	3,000,985	3,246,904
Fixed Maturities [Member] | Collateralized Mortgage Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value
Fixed Maturities [Member] | Collateralized Mortgage Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	3,000,985	3,246,904
Fixed Maturities [Member] | Collateralized Mortgage Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value
Equity Securities [Member]
Investments in available-for-sale securities, at fair value	7,687,435	10,141,503
Equity Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	7,687,435	10,141,503
Equity Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	5,389,644	9,169,694
Equity Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	2,297,791	971,809
Equity Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value
Equity Securities [Member] | Common Stock [Member]
Investments in available-for-sale securities, at fair value	5,799,414	9,214,694
Equity Securities [Member] | Common Stock [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	5,799,414	9,214,694
Equity Securities [Member] | Common Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	5,389,644	9,169,694
Equity Securities [Member] | Common Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	409,770	45,000
Equity Securities [Member] | Common Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value
Equity Securities [Member] | Preferred Stock [Member]
Investments in available-for-sale securities, at fair value	1,888,021	926,809
Equity Securities [Member] | Preferred Stock [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	1,888,021	926,809
Equity Securities [Member] | Preferred Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value
Equity Securities [Member] | Preferred Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	1,888,021	926,809
Equity Securities [Member] | Preferred Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value