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Policyholder Liabilities (Schedule of Reconciliation of Reinsurance Market Risk Benefits by Assets and Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2023	Dec. 31, 2022
Market Risk Benefit [Line Items]
Asset	$ 711,413	$ 640,681
Liability	133,121	36,066
Net asset	578,292	604,615
Fixed Index Annuities
Market Risk Benefit [Line Items]
Asset	695,387	629,611
Liability	132,871	35,652
Net asset	562,516	593,959
Fixed Rate Annuities
Market Risk Benefit [Line Items]
Asset	16,026	11,070
Liability	250	414
Net asset	$ 15,776	$ 10,656

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Market Risk Benefit, Reinsurance Recoverable, after Increase (Decrease) from Instrument-Specific Credit Risk

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Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 944
-SubTopic 40
-Name Accounting Standards Codification
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-URI https://asc.fasb.org//1943274/2147480046/944-40-55-29G

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