Allowance for Expected Credit Losses, Held-to-Maturity Fixed-Maturity Securities (Details) - USD ($)	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022
Held-to-Maturity, Net of Allowance for Expected Credit Losses [Abstract]
Balance at beginning of period	$ 688,439,360
Balance at end of period	679,497,038	$ 688,439,360
Allowance for Expected Credit Losses [Abstract]
Balance at beginning of period	$ 0
Accounting Standards Update [Extensible Enumeration]	ASU 2016-13 [Member]	ASU 2016-13 [Member]
Current period change for expected credit losses	$ 58,000
Balance at end of period	1,325,847	$ 0
Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Expected Credit Losses [Abstract]
Balance at beginning of period	$ 1,268,000
Balance at end of period		$ 1,268,000