Policyholders' Liabilities - Liability for Future Policy Benefits, Revenue and Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended	6 Months Ended
Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2025	Jun. 30, 2024
Life Insurance
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	$ 32,643	$ 31,605	$ 61,797	$ 59,466
Liability for Future Policy Benefit, Interest Expense	10,485	10,634	21,066	21,361
Home Service Insurance:
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	10,745	10,954	21,388	21,768
Liability for Future Policy Benefit, Interest Expense	3,036	2,979	6,059	5,949
Life Insurance, Permanent
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	27,930	24,801	54,982	48,117
Liability for Future Policy Benefit, Interest Expense	8,270	8,427	16,637	16,891
Life Insurance, Permanent Limited Pay
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	3,995	4,026	8,622	7,672
Liability for Future Policy Benefit, Interest Expense	2,215	2,207	4,429	4,470
Life Insurance, Other
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	3,470	3,933	3,298	5,042
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	2,944	1,358	5,484	1,731
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	32,451	31,402	61,418	59,100
Liability for Future Policy Benefit, Interest Expense	10,485	10,634	21,066	21,361
Life Insurance, Accident And Health, Other
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	192	204	380	368
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	0	1	1	2
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	192	203	379	366
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	8,045	8,225	16,149	16,466
Liability for Future Policy Benefit, Interest Expense	1,371	1,347	2,737	2,691
Home Service Insurance, Life Insurance, Permanent Limited Pay
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	1,936	2,028	3,893	4,068
Liability for Future Policy Benefit, Interest Expense	1,665	1,632	3,322	3,258
Home Service Insurance, Life Insurance, Other
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	574	453	907	747
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	69	7	81	19
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	10,486	10,699	20,868	21,262
Liability for Future Policy Benefit, Interest Expense	3,036	2,979	6,059	5,949
Home Service Insurance, Accident And Health, Other
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	259	255	520	506
Liability for Future Policy Benefit, Interest Expense	$ 0	$ 0	$ 0	$ 0