Note 4 - Fair Value Measurements - Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($)	Dec. 31, 2019	Dec. 31, 2018
Investments in available-for-sale securities, at fair value	$ 43,294,395	$ 37,869,778
Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	43,294,395	37,869,778
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	9,802,333	11,305,875
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	33,300,462	26,363,903
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value	191,600	200,000
Fixed Maturities [Member]
Investments in available-for-sale securities, at fair value	33,152,892	26,983,803
Fixed Maturities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	33,152,892	26,983,803
Fixed Maturities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	632,639	569,940
Fixed Maturities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	32,328,653	26,213,863
Fixed Maturities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value	191,600	200,000
Fixed Maturities [Member] | US Treasury Securities [Member]
Investments in available-for-sale securities, at fair value	632,639	569,940
Fixed Maturities [Member] | US Treasury Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	632,639	569,940
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	632,639	569,940
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	20,084,397	15,842,361
Fixed Maturities [Member] | Corporate Debt Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	20,084,397	15,842,361
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	19,892,797	15,642,361
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	200,000
Fixed Maturities [Member] | US States and Political Subdivisions Debt Securities [Member]
Investments in available-for-sale securities, at fair value	7,055,059	6,598,113
Fixed Maturities [Member] | US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	7,055,059	6,598,113
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	7,055,059	6,598,113
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	2,133,893	192,404
Fixed Maturities [Member] | Redeemable Preferred Stock [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	2,133,893	192,404
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	2,133,893	192,404
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	3,246,904	3,780,985
Fixed Maturities [Member] | Collateralized Mortgage Backed Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	3,246,904	3,780,985
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	3,246,904	3,780,985
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	10,141,503	10,885,975
Equity Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	10,141,503	10,885,975
Equity Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	9,169,694	10,735,935
Equity Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	971,809	150,040
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	9,214,694	10,735,935
Equity Securities [Member] | Common Stock [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	9,214,694	10,735,935
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	9,169,694	10,735,935
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	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	926,809	150,040
Equity Securities [Member] | Preferred Stock [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	926,809	150,040
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	926,809	150,040
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