Policy Liabilities - Schedule of Policyholder Account Balance (Details) - USD ($) $ in Thousands	3 Months Ended
Mar. 31, 2026	Mar. 31, 2025
Interest Sensitive Life
Policyholder Account Balance [Roll Forward]
Beginning Balance	$ 711,687	$ 723,389
Issuances	0	0
Premiums and deposits received	5,049	5,250
Policy charges	(2,804)	(2,986)
Surrenders and withdrawals	(5,627)	(5,966)
Benefit payments	(7,251)	(8,329)
Interest credited	6,764	6,875
Other	911	2,036
Ending Balance	$ 708,729	$ 720,269
Weighted-average credit rate	3.86%	3.86%
Net amount at risk	$ 1,537,256	$ 1,636,687
Cash surrender value	664,968	674,838
Deferred Annuity
Policyholder Account Balance [Roll Forward]
Beginning Balance	580,669	656,573
Issuances	186	171
Premiums and deposits received	4,069	3,766
Policy charges	0	0
Surrenders and withdrawals	(13,722)	(16,531)
Benefit payments	(7,776)	(12,831)
Interest credited	4,743	5,373
Other	(91)	(302)
Ending Balance	$ 568,078	$ 636,219
Weighted-average credit rate	3.34%	3.37%
Cash surrender value	$ 568,078	$ 636,138
Amount reinsured with third-party reinsurers under existing reinsurance agreements	389,000	439,000
Other Policy-holders' Funds
Policyholder Account Balance [Roll Forward]
Beginning Balance	532,047	468,604
Issuances	0	0
Premiums and deposits received	186,814	86,885
Policy charges	0	0
Surrenders and withdrawals	(143,318)	(93,128)
Benefit payments	0	0
Interest credited	5,604	5,443
Other	(4,695)	(4,656)
Ending Balance	$ 576,452	$ 463,148
Weighted-average credit rate	4.11%	4.76%
Cash surrender value	$ 576,452	$ 463,148

Policyholder Account Balance, Reinsured Amount

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- Definition

Amount of cash to be paid to policyholder upon termination and surrender of long-duration contract issued by insurance entity.

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Amount of interest expense for allocation to policyholder account balance.

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Amount of cash outflow to policyholder account balance from benefit payment.

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Amount of increase (decrease) in liability for policyholder account balance from change, classified as other.

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Amount of increase in liability for policyholder account balance from contract issuance.

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Amount of guaranteed benefit in excess of current account balance of policyholder account balance.

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Amount of decrease in liability for policyholder account balance from policy charge.

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Amount of cash inflow to policyholder account balance from premium received.

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Amount of decrease in liability for policyholder account balance from contract redemption and withdrawal of funds.

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- Definition

Weighted-average crediting rate for liability for policyholder account balance, calculated at a point in time.

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- Definition

Amount due to policyholder. Includes, but is not limited to, unpaid policy dividend, retrospective refund, and undistributed earnings on participating business. Excludes future policy benefit and claim expense.

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