Investments, Amortized Cost and Estimated Fair Value of Fixed Maturities by Contractual Maturity (Details) - USD ($)	Dec. 31, 2022	Dec. 31, 2021
Held To Maturity [Abstract]
Due in one year or less, amortized cost	$ 24,608,278
Due after one year through five years, amortized cost	86,581,717
Due after five years through ten years, amortized cost	245,818,039
Due after ten years, amortized cost	319,400,377
Mortgage-backed securities, amortized cost	12,030,949
Total held to maturity, amortized cost	688,439,360	$ 668,104,568
Available For Sale [Abstract]
Due in one year or less, amortized cost	14,601,260
Due after one year through five years, amortized cost	163,170,354
Due after five years through ten years, amortized cost	123,462,268
Due after ten years, amortized cost	30,792,676
Mortgage-backed securities, amortized cost	239,886,169
Total available for sale, amortized cost	571,912,727	523,293,046
Held To Maturity [Abstract]
Due in one year or less, estimated fair value	24,736,944
Due after one year through five years, estimated fair value	83,910,606
Due after five years through ten years, estimated fair value	218,039,676
Due after ten years, estimated fair value	259,961,089
Mortgage-backed securities, estimated fair value	11,396,366
Total held to maturity, estimated fair value	598,044,681	697,400,964
Available For Sale [Abstract]
Due in one year or less, estimated fair value	14,485,681
Due after one year through five years, estimated fair value	154,175,256
Due after five years through ten years, estimated fair value	111,296,437
Due after ten years, estimated fair value	26,557,767
Mortgage-backed securities, estimated fair value	217,276,790
Total available for sale, estimated fair value	$ 523,791,931	$ 532,629,015