Note 4 - Fair Value Measurements - Assets Measured at Fair Value on a Recurring Basis (Details) - USD ($)	Jun. 30, 2024	Dec. 31, 2023
Investments in available-for-sale securities, at fair value	$ 76,271,650	$ 74,509,520
Other invested assets	2,628,726	2,239,683
Limited partnership interests	415,721	389,827
Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	76,271,650	74,509,520
Equity securities, fair value	3,758,098	3,585,885
Other invested assets	2,628,726	2,239,683
Reinsurance contract allocated hedge	530,129	673,681
Limited partnership interests	415,721	389,827
Investments, fair value	83,604,324	81,398,596
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Investments in available-for-sale securities, at fair value	710,623	724,668
Equity securities, fair value	2,153,016	2,017,756
Other invested assets	0	0
Reinsurance contract allocated hedge	0	0
Limited partnership interests	0	0
Investments, fair value	2,863,639	2,742,424
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Investments in available-for-sale securities, at fair value	57,664,314	56,075,332
Equity securities, fair value	1,605,082	1,568,129
Other invested assets	0	0
Reinsurance contract allocated hedge	0	0
Limited partnership interests	0	0
Investments, fair value	59,269,396	57,643,461
Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Investments in available-for-sale securities, at fair value	17,896,713	17,709,520
Equity securities, fair value	0	0
Other invested assets	2,628,726	2,239,683
Reinsurance contract allocated hedge	530,129	673,681
Limited partnership interests	415,721	389,827
Investments, fair value	21,471,289	21,012,711
US Treasury Securities [Member]
Investments in available-for-sale securities, at fair value	710,623	724,668
US Treasury Securities [Member] \| Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	710,623	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	710,623	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	17,218,291	17,813,362
Corporate Debt Securities [Member] \| Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	17,218,291	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	17,048,691	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	4,846,956	5,636,093
US States and Political Subdivisions Debt Securities [Member] \| Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	4,846,956	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	4,846,956	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	3,113,899	3,305,569
Redeemable Preferred Stock [Member] \| Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	3,113,899	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	3,113,899	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	17,393,363	17,052,420
Term Loans [Member] \| Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	17,393,363	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	17,393,363	17,052,420
Collateralized Mortgage-Backed Securities [Member]
Investments in available-for-sale securities, at fair value	32,988,518	29,977,408
Collateralized Mortgage-Backed Securities [Member] \| Fair Value, Recurring [Member]
Investments in available-for-sale securities, at fair value	32,988,518	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	32,654,768	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	333,750	487,500
Common Stock [Member] \| Fair Value, Recurring [Member]
Equity securities, fair value	2,273,916	2,116,356
Common Stock [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 1 [Member]
Equity securities, fair value	2,153,016	2,017,756
Common Stock [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 2 [Member]
Equity securities, fair value	120,900	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	1,484,182	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	1,484,182	1,469,529
Preferred Stock [Member] \| Fair Value, Recurring [Member] \| Fair Value, Inputs, Level 3 [Member]
Equity securities, fair value	$ 0	$ 0

Amount of investment in debt security measured at fair value with change in fair value recognized in other comprehensive income (available-for-sale).

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