Fair Value Measurements - Assets and Liabilities Measured at Fair Value on a Recurring Basis (Details) - Measured on a Recurring Basis [Member] - USD ($)	Jun. 30, 2026	Dec. 31, 2025
Fair Value Measurements [Abstract]
Fixed maturities, at fair value	$ 72,069,483	$ 73,159,589
Equity securities, at fair value	175,184,157	170,150,876
Short-term investments	4,949,271	9,808,824
Total financial assets	252,202,911	253,119,289
U.S. Government and Government Agencies and Authorities [Member]
Fair Value Measurements [Abstract]
Fixed maturities, at fair value	22,681,372	22,750,726
U.S. Special Revenue and Assessments [Member]
Fair Value Measurements [Abstract]
Fixed maturities, at fair value	7,372,006	7,453,922
Corporate Securities [Member]
Fair Value Measurements [Abstract]
Fixed maturities, at fair value	42,016,105	42,954,941
Common Stock [Member]
Fair Value Measurements [Abstract]
Equity securities, at fair value	94,074,782	84,340,441
Limited Liability Companies [Member]
Fair Value Measurements [Abstract]
Equity securities, at fair value	81,109,375	85,810,435
Estimated Fair Value [Member] \| Level 1 [Member]
Fair Value Measurements [Abstract]
Fixed maturities, at fair value	22,681,372	22,750,726
Equity securities, at fair value	84,112,459	75,400,093
Short-term investments	4,949,271	9,808,824
Total financial assets	111,743,102	107,959,643
Estimated Fair Value [Member] \| Level 1 [Member] \| U.S. Government and Government Agencies and Authorities [Member]
Fair Value Measurements [Abstract]
Fixed maturities, at fair value	22,681,372	22,750,726
Estimated Fair Value [Member] \| Level 1 [Member] \| U.S. Special Revenue and Assessments [Member]
Fair Value Measurements [Abstract]
Fixed maturities, at fair value	0	0
Estimated Fair Value [Member] \| Level 1 [Member] \| Corporate Securities [Member]
Fair Value Measurements [Abstract]
Fixed maturities, at fair value	0	0
Estimated Fair Value [Member] \| Level 1 [Member] \| Common Stock [Member]
Fair Value Measurements [Abstract]
Equity securities, at fair value	84,112,459	75,400,093
Estimated Fair Value [Member] \| Level 1 [Member] \| Limited Liability Companies [Member]
Fair Value Measurements [Abstract]
Equity securities, at fair value	0	0
Estimated Fair Value [Member] \| Level 2 [Member]
Fair Value Measurements [Abstract]
Fixed maturities, at fair value	49,388,111	50,408,863
Equity securities, at fair value	6,300,640	5,571,600
Short-term investments	0	0
Total financial assets	55,688,751	55,980,463
Estimated Fair Value [Member] \| Level 2 [Member] \| U.S. Government and Government Agencies and Authorities [Member]
Fair Value Measurements [Abstract]
Fixed maturities, at fair value	0	0
Estimated Fair Value [Member] \| Level 2 [Member] \| U.S. Special Revenue and Assessments [Member]
Fair Value Measurements [Abstract]
Fixed maturities, at fair value	7,372,006	7,453,922
Estimated Fair Value [Member] \| Level 2 [Member] \| Corporate Securities [Member]
Fair Value Measurements [Abstract]
Fixed maturities, at fair value	42,016,105	42,954,941
Estimated Fair Value [Member] \| Level 2 [Member] \| Common Stock [Member]
Fair Value Measurements [Abstract]
Equity securities, at fair value	6,300,640	5,571,600
Estimated Fair Value [Member] \| Level 2 [Member] \| Limited Liability Companies [Member]
Fair Value Measurements [Abstract]
Equity securities, at fair value	0	0
Estimated Fair Value [Member] \| Level 3 [Member]
Fair Value Measurements [Abstract]
Fixed maturities, at fair value	0	0
Equity securities, at fair value	84,771,058	89,179,183
Short-term investments	0	0
Total financial assets	84,771,058	89,179,183
Estimated Fair Value [Member] \| Level 3 [Member] \| U.S. Government and Government Agencies and Authorities [Member]
Fair Value Measurements [Abstract]
Fixed maturities, at fair value	0	0
Estimated Fair Value [Member] \| Level 3 [Member] \| U.S. Special Revenue and Assessments [Member]
Fair Value Measurements [Abstract]
Fixed maturities, at fair value	0	0
Estimated Fair Value [Member] \| Level 3 [Member] \| Corporate Securities [Member]
Fair Value Measurements [Abstract]
Fixed maturities, at fair value	0	0
Estimated Fair Value [Member] \| Level 3 [Member] \| Common Stock [Member]
Fair Value Measurements [Abstract]
Equity securities, at fair value	3,661,683	3,368,748
Estimated Fair Value [Member] \| Level 3 [Member] \| Limited Liability Companies [Member]
Fair Value Measurements [Abstract]
Equity securities, at fair value	$ 81,109,375	$ 85,810,435