Policyholders' Liabilities - Liability for Future Policy Benefits, Revenue and Interest Expense (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Life Insurance
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	$ 27,861	$ 26,207
Liability for Future Policy Benefit, Interest Expense	10,727	10,906
Home Service Insurance:
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	10,814	11,085
Liability for Future Policy Benefit, Interest Expense	2,970	2,910
Life Insurance, Permanent
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	23,316	22,458
Liability for Future Policy Benefit, Interest Expense	8,464	8,570
Life Insurance, Permanent Limited Pay
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	3,646	4,168
Liability for Future Policy Benefit, Interest Expense	2,263	2,336
Life Insurance, Other
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	1,109	77
Liability for Future Policy Benefit, Interest Expense	0	0
Life Insurance, Reinsurance
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Reinsurance	373	648
Liability for Future Policy Benefit, Interest Expense	0	0
Life Insurance, Net of Reinsurance
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	27,698	26,055
Liability for Future Policy Benefit, Interest Expense	10,727	10,906
Life Insurance, Accident And Health, Other
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	164	152
Liability for Future Policy Benefit, Interest Expense	0	0
Life Insurance, Accident And Health, Reinsurance
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Reinsurance	1	0
Liability for Future Policy Benefit, Interest Expense	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	163	152
Liability for Future Policy Benefit, Interest Expense	0	0
Home Service Insurance, Life Insurance, Permanent
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	8,241	8,372
Liability for Future Policy Benefit, Interest Expense	1,344	1,324
Home Service Insurance, Life Insurance, Permanent Limited Pay
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	2,040	2,154
Liability for Future Policy Benefit, Interest Expense	1,626	1,586
Home Service Insurance, Life Insurance, Other
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	294	368
Liability for Future Policy Benefit, Interest Expense	0	0
Home Service Insurance, Life Insurance, Reinsurance
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Reinsurance	12	15
Liability for Future Policy Benefit, Interest Expense	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	10,563	10,879
Liability for Future Policy Benefit, Interest Expense	2,970	2,910
Home Service Insurance, Accident And Health, Other
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	251	206
Liability for Future Policy Benefit, Interest Expense	$ 0	$ 0