Policyholders' Liabilities - Policyholders' Account Balance Reconciliation to Policyholders' Account Balances' Liability (Details) - USD ($) $ in Thousands	Dec. 31, 2024	Dec. 31, 2023
Policyholder Account Balance [Line Items]
Annuities	$ 149,977	$ 133,216
Premiums paid in advance	31,182	32,446
Supplemental Contracts Without Life Contingencies
Policyholder Account Balance [Line Items]
Annuities	60,414	44,569
Fixed Annuity
Policyholder Account Balance [Line Items]
Annuities	88,080	87,134
Unearned Revenue Reserve
Policyholder Account Balance [Line Items]
Annuities	1,483	1,513
Other
Policyholder Account Balance [Line Items]
Premiums paid in advance	1,285	1,407
Premiums Paid In Advance
Policyholder Account Balance [Line Items]
Premiums paid in advance	$ 29,897	$ 31,039