Policyholders' Liabilities - Liability for Future Policy Benefits, Revenue and Interest Expense (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2025	Dec. 31, 2024
International Insurance Segment
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	$ 118,355	$ 118,803
Liability for Future Policy Benefit, Interest Expense	38,724	40,136
Domestic Insurance Segment
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	58,016	54,543
Liability for Future Policy Benefit, Interest Expense	15,169	14,444
International Insurance, Permanent
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	92,284	92,153
Liability for Future Policy Benefit, Interest Expense	31,572	32,923
International Insurance, Permanent Limited Pay
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	18,498	16,322
Liability for Future Policy Benefit, Interest Expense	7,152	7,213
International Insurance, Other
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	8,686	11,220
Liability for Future Policy Benefit, Interest Expense	0	0
International Insurance, Reinsurance
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit Gross Premium Income, Reinsurance	1,822	1,653
Liability for Future Policy Benefit, Interest Expense	0	0
International Insurance, Net of Reinsurance
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	117,646	118,042
Liability for Future Policy Benefit, Interest Expense	38,724	40,136
International Insurance, Accident And Health, Other
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	709	761
Liability for Future Policy Benefit, Interest Expense	0	0
Domestic Insurance, Life Insurance, Permanent
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	57,151	45,891
Liability for Future Policy Benefit, Interest Expense	6,726	6,142
Domestic Insurance, Life Insurance, Permanent Limited Pay
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	8,106	8,514
Liability for Future Policy Benefit, Interest Expense	8,443	8,302
Domestic Insurance, Life Insurance, Other
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	2,278	2,953
Liability for Future Policy Benefit, Interest Expense	0	0
Domestic Insurance, Life Insurance, Reinsurance
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit Gross Premium Income, Reinsurance	10,570	3,839
Liability for Future Policy Benefit, Interest Expense	0	0
Domestic Insurance, Life Insurance, Net of Reinsurance
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	56,965	53,519
Liability for Future Policy Benefit, Interest Expense	15,169	14,444
Domestic Insurance, Accident And Health, Other
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	1,054	1,027
Liability for Future Policy Benefit, Interest Expense	0	0
Domestic Insurance, Accident And Health, Reinsurance
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit Gross Premium Income, Reinsurance	3	3
Liability for Future Policy Benefit, Interest Expense	0	0
Domestic Insurance, Accident And Health, Net Of Reinsurance
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Gross Premium Income	1,051	1,024
Liability for Future Policy Benefit, Interest Expense	$ 0	$ 0