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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

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