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Policyholders' Liabilities - Liability for Future Policy Benefits, Revenue and Interest Expense (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024
Life Insurance |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |
Liability for Future Policy Benefit, Gross Premium Income | $ 32,785 | $ 32,201 | $ 94,582 | $ 91,667
Liability for Future Policy Benefit, Interest Expense | 10,393 | 10,660 | 31,459 | 32,021
Home Service Insurance: |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |
Liability for Future Policy Benefit, Gross Premium Income | 10,518 | 10,712 | 31,906 | 32,480
Liability for Future Policy Benefit, Interest Expense | 3,043 | 2,985 | 9,102 | 8,934
Life Insurance, Permanent |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |
Liability for Future Policy Benefit, Gross Premium Income | 29,882 | 27,930 | 84,864 | 76,047
Liability for Future Policy Benefit, Interest Expense | 8,149 | 8,391 | 24,786 | 25,282
Life Insurance, Permanent Limited Pay |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |
Liability for Future Policy Benefit, Gross Premium Income | 4,184 | 3,395 | 12,806 | 11,067
Liability for Future Policy Benefit, Interest Expense | 2,244 | 2,269 | 6,673 | 6,739
Life Insurance, Other |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |
Liability for Future Policy Benefit, Gross Premium Income | 1,826 | 2,508 | 5,124 | 7,550
Liability for Future Policy Benefit, Interest Expense | 0 | 0 | 0 | 0
Life Insurance, Reinsurance |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |
Liability for Future Policy Benefit, Reinsurance | 3,280 | 1,828 | 8,764 | 3,559
Liability for Future Policy Benefit, Interest Expense | 0 | 0 | 0 | 0
Life Insurance, Net of Reinsurance |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |
Liability for Future Policy Benefit, Gross Premium Income | 32,612 | 32,005 | 94,030 | 91,105
Liability for Future Policy Benefit, Interest Expense | 10,393 | 10,660 | 31,459 | 32,021
Life Insurance, Accident And Health, Other |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |
Liability for Future Policy Benefit, Gross Premium Income | 174 | 197 | 554 | 565
Liability for Future Policy Benefit, Interest Expense | 0 | 0 | 0 | 0
Life Insurance, Accident And Health, Reinsurance |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |
Liability for Future Policy Benefit, Reinsurance | 1 | 1 | 2 | 3
Liability for Future Policy Benefit, Interest Expense | 0 | 0 | 0 | 0
Life Insurance, Accident And Health, Net Of Reinsurance |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |
Liability for Future Policy Benefit, Gross Premium Income | 173 | 196 | 552 | 562
Liability for Future Policy Benefit, Interest Expense | 0 | 0 | 0 | 0
Home Service Insurance, Life Insurance, Permanent |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |
Liability for Future Policy Benefit, Gross Premium Income | 8,035 | 8,257 | 24,184 | 24,723
Liability for Future Policy Benefit, Interest Expense | 1,371 | 1,349 | 4,108 | 4,040
Home Service Insurance, Life Insurance, Permanent Limited Pay |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |
Liability for Future Policy Benefit, Gross Premium Income | 1,881 | 1,837 | 5,774 | 5,905
Liability for Future Policy Benefit, Interest Expense | 1,672 | 1,636 | 4,994 | 4,894
Home Service Insurance, Life Insurance, Other |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |
Liability for Future Policy Benefit, Gross Premium Income | 351 | 367 | 1,258 | 1,114
Liability for Future Policy Benefit, Interest Expense | 0 | 0 | 0 | 0
Home Service Insurance, Life Insurance, Reinsurance |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |
Liability for Future Policy Benefit, Reinsurance | 7 | 5 | 88 | 24
Liability for Future Policy Benefit, Interest Expense | 0 | 0 | 0 | 0
Home Service Insurance, Life Insurance, Net of Reinsurance |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |
Liability for Future Policy Benefit, Gross Premium Income | 10,260 | 10,456 | 31,128 | 31,718
Liability for Future Policy Benefit, Interest Expense | 3,043 | 2,985 | 9,102 | 8,934
Home Service Insurance, Accident And Health, Other |  |  |  |
Liability for Future Policy Benefit, Activity [Line Items] |  |  |  |
Liability for Future Policy Benefit, Gross Premium Income | 258 | 256 | 778 | 762
Liability for Future Policy Benefit, Interest Expense | $ 0 | $ 0 | $ 0 | $ 0

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