Policyholders' Liabilities - Liability for Future Policy Benefit, Discounted Undiscounted Activity (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2020
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change			$ 1,613,279
Life Insurance, Permanent
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance	$ 621,935	$ 612,531
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance	1,495,206	1,479,562
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance	481,963	472,754
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change	973,350	947,415
Home Service Insurance, Life Insurance, Permanent
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance	455,552	461,298
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance	484,740	473,039
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance	275,629	271,440
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change	211,946	200,351
Life Insurance, Permanent Limited Pay
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance	47,161	47,447
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance	326,821	323,559
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance	42,138	41,853
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change	195,122	195,612
Home Service Insurance, Life Insurance, Permanent Limited Pay
Liability for Future Policy Benefit, Activity [Line Items]
Liability for Future Policy Benefit, Expected Future Gross Premium, Undiscounted, before Reinsurance	77,266	74,278
Liability for Future Policy Benefit, Expected Future Policy Benefit, Undiscounted, before Reinsurance	320,810	316,225
Liability for Future Policy Benefit, Expected Future Gross Premium, Discounted, before Reinsurance	53,075	52,030
Liability for Future Policy Benefit, Expected Future Policy Benefit, before Reinsurance, after Discount Rate Change	$ 122,784	$ 116,356