Policyholders' Liabilities - Liability for Future Policy Benefits, Revenue and Interest Expense (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Life Insurance
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	$ 122,145	$ 124,653	$ 126,058
Liability for Future Policy Benefit, Interest Expense	42,907	43,379	43,398
Home Service Insurance Segment [Member]
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	44,101	44,211	44,993
Liability for Future Policy Benefit, Interest Expense	11,682	11,555	11,634
Life Insurance, Permanent
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	93,917	94,905	96,766
Liability for Future Policy Benefit, Interest Expense	33,984	34,165	34,067
Life Insurance, Permanent Limited Pay
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	16,396	15,023	13,678
Liability for Future Policy Benefit, Interest Expense	8,923	9,214	9,331
Life Insurance, Other
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	12,813	16,047	16,856
Liability for Future Policy Benefit, Interest Expense	0	0	0
Life Insurance, Reinsurance
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit Gross Premium Income, Reinsurance	1,702	1,819	1,742
Liability for Future Policy Benefit, Interest Expense	0	0	0
Life Insurance, Net of Reinsurance
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	121,424	124,156	125,558
Liability for Future Policy Benefit, Interest Expense	42,907	43,379	43,398
Life Insurance, Accident And Health, Other
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	725	502	505
Liability for Future Policy Benefit, Interest Expense	0	0	0
Life Insurance, Accident And Health, Reinsurance
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit Gross Premium Income, Reinsurance	4	5	5
Liability for Future Policy Benefit, Interest Expense	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	721	497	500
Liability for Future Policy Benefit, Interest Expense	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	33,263	33,312	33,706
Liability for Future Policy Benefit, Interest Expense	5,294	5,300	5,447
Home Service Insurance, Life Insurance, Permanent Limited Pay
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	8,576	8,396	8,324
Liability for Future Policy Benefit, Interest Expense	6,388	6,255	6,187
Home Service Insurance, Life Insurance, Other
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	1,371	1,749	2,236
Liability for Future Policy Benefit, Interest Expense	0	0	0
Home Service Insurance, Life Insurance, Reinsurance
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit Gross Premium Income, Reinsurance	25	27	23
Liability for Future Policy Benefit, Interest Expense	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	43,185	43,430	44,243
Liability for Future Policy Benefit, Interest Expense	11,682	11,555	11,634
Home Service Insurance, Accident And Health, Other
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	916	781	750
Liability for Future Policy Benefit, Interest Expense	$ 0	$ 0	$ 0