v3.26.1
Policy Liabilities - Schedule of Policyholder Account Balance, Guaranteed Minimum Crediting Rate (Details) - USD ($)
$ in Thousands
Mar. 31, 2026
Dec. 31, 2025
Mar. 31, 2025
Dec. 31, 2024
Interest Sensitive Life        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates $ 708,729 $ 711,687 $ 720,269 $ 723,389
Interest Sensitive Life | Less than 3.00% | At guaranteed minimum        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates 3.00%   3.00%  
Range of guaranteed minimum crediting rates $ 0   $ 0  
Interest Sensitive Life | 3.00%-3.99% | At guaranteed minimum        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates $ 29,372   $ 29,408  
Interest Sensitive Life | 3.00%-3.99% | At guaranteed minimum | Minimum        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates 3.00%   3.00%  
Interest Sensitive Life | 3.00%-3.99% | At guaranteed minimum | Maximum        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates 3.99%   3.99%  
Interest Sensitive Life | 4.00%-4.99% | At guaranteed minimum        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates $ 590,468   $ 601,367  
Interest Sensitive Life | 4.00%-4.99% | At guaranteed minimum | Minimum        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates 4.00%   4.00%  
Interest Sensitive Life | 4.00%-4.99% | At guaranteed minimum | Maximum        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates 4.99%   4.99%  
Interest Sensitive Life | Greater than 5.00% | At guaranteed minimum        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates 5.00%   5.00%  
Range of guaranteed minimum crediting rates $ 88,889   $ 89,494  
Deferred Annuity        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates 568,078 580,669 636,219 656,573
Amount reinsured with third-party reinsurers under existing reinsurance agreements 389,000   439,000  
Deferred Annuity | Less than 3.00% | At guaranteed minimum        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates 2,014   1,866  
Deferred Annuity | 3.00%-3.99% | At guaranteed minimum        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates 393,470   455,618  
Deferred Annuity | 4.00%-4.99% | At guaranteed minimum        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates 88,022   178,735  
Deferred Annuity | Greater than 5.00% | At guaranteed minimum        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates 84,572   0  
Other Policy-holders' Funds        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates 576,452 $ 532,047 463,148 $ 468,604
Other Policy-holders' Funds | Less than 3.00% | At guaranteed minimum        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates 483,399   368,459  
Other Policy-holders' Funds | 3.00%-3.99% | At guaranteed minimum        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates 3,158   3,145  
Other Policy-holders' Funds | 4.00%-4.99% | At guaranteed minimum        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates 55,134   55,767  
Other Policy-holders' Funds | Greater than 5.00% | At guaranteed minimum        
Policyholder Account Balance, Guaranteed Minimum Crediting Rate [Line Items]        
Range of guaranteed minimum crediting rates $ 34,761   $ 35,777