Allowance for Expected Credit Losses, Held-to-Maturity Fixed-Maturity Securities (Details) - USD ($)	3 Months Ended		6 Months Ended
	Jun. 30, 2024	Jun. 30, 2023	Jun. 30, 2024	Jun. 30, 2023
Held-to-Maturity, Net of Allowance for Expected Credit Losses [Abstract]
Balance at beginning of period	$ 683,399,000	$ 693,779,000	$ 679,497,038	$ 688,439,000
Balance at end of period	690,580,051	685,402,000	690,580,051	685,402,000
Allowance for Expected Credit Losses [Abstract]
Balance at beginning of period	1,329,000	1,355,000	$ 1,325,847	$ 0
Accounting Standards Update [Extensible Enumeration]			ASU 2016-13 [Member]	ASU 2016-13 [Member]
Current period change for expected credit losses	25,000	(31,000)	$ 28,000	$ 56,000
Balance at end of period	$ 1,353,571	$ 1,324,000	1,353,571	1,324,000
Cumulative Effect, Period of Adoption, Adjustment [Member]
Allowance for Expected Credit Losses [Abstract]
Balance at beginning of period			$ 0	$ 1,268,000