Note 4 - Fair Value Measurements - Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($)	Mar. 31, 2024	Dec. 31, 2023
Investments in available-for-sale securities, at fair value	$ 74,910,043	$ 74,509,520
Other invested assets	2,234,249	2,239,683
Limited partnership interests	401,778	389,827
Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	74,910,043	74,509,520
Equity securities, fair value	3,742,820	3,585,885
Other invested assets	2,234,249	2,239,683
Reinsurance contract allocated hedge	478,542	673,681
Limited partnership interests	401,778	389,827
Investments, fair value	81,767,432	81,398,596
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	713,469	724,668
Equity securities, fair value	2,119,019	2,017,756
Other invested assets	0	0
Reinsurance contract allocated hedge	0	0
Limited partnership interests	0	0
Investments, fair value	2,832,488	2,742,424
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	56,878,175	56,075,332
Equity securities, fair value	1,623,801	1,568,129
Other invested assets	0	0
Reinsurance contract allocated hedge	0	0
Limited partnership interests	0	0
Investments, fair value	58,501,976	57,643,461
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value	17,318,399	17,709,520
Equity securities, fair value	0	0
Other invested assets	2,234,249	2,239,683
Reinsurance contract allocated hedge	478,542	673,681
Limited partnership interests	401,778	389,827
Investments, fair value	20,432,968	21,012,711
US Treasury Securities [Member]
Investments in available-for-sale securities, at fair value	713,469	724,668
US Treasury Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	713,469	724,668
US Treasury Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	713,469	724,668
US Treasury Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	0	0
US Treasury Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value	0	0
Corporate Debt Securities [Member]
Investments in available-for-sale securities, at fair value	17,293,535	17,813,362
Corporate Debt Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	17,293,535	17,813,362
Corporate Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	0	0
Corporate Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	17,123,935	17,643,762
Corporate Debt Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value	169,600	169,600
US States and Political Subdivisions Debt Securities [Member]
Investments in available-for-sale securities, at fair value	5,144,684	5,636,093
US States and Political Subdivisions Debt Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	5,144,684	5,636,093
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	0	0
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	5,144,684	5,636,093
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	0	0
Redeemable Preferred Stock [Member]
Investments in available-for-sale securities, at fair value	3,424,071	3,305,569
Redeemable Preferred Stock [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	3,424,071	3,305,569
Redeemable Preferred Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	0	0
Redeemable Preferred Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	3,424,071	3,305,569
Redeemable Preferred Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value	0	0
Term Loans [Member]
Investments in available-for-sale securities, at fair value	16,661,299	17,052,420
Term Loans [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	16,661,299	17,052,420
Term Loans [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	0	0
Term Loans [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	0	0
Term Loans [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value	16,661,299	17,052,420
Collateralized Mortgage-Backed Securities [Member]
Investments in available-for-sale securities, at fair value	31,672,985	29,977,408
Collateralized Mortgage-Backed Securities [Member] | Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	31,672,985	29,977,408
Collateralized Mortgage-Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	0	0
Collateralized Mortgage-Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	31,185,485	29,489,908
Collateralized Mortgage-Backed Securities [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value	487,500	487,500
Common Stock [Member] | Fair Value, Recurring [Member]
Equity securities, fair value	2,218,719	2,116,356
Common Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Equity securities, fair value	2,119,019	2,017,756
Common Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Equity securities, fair value	99,700	98,600
Common Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Equity securities, fair value	0	0
Preferred Stock [Member] | Fair Value, Recurring [Member]
Equity securities, fair value	1,524,101	1,469,529
Preferred Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Equity securities, fair value	0	0
Preferred Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 2 [Member]
Equity securities, fair value	1,524,101	1,469,529
Preferred Stock [Member] | Fair Value, Recurring [Member] | Fair Value, Inputs, Level 3 [Member]
Equity securities, fair value	$ 0	$ 0