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Life and Annuity Benefits (Tables)
 9 Months Ended
Sep. 30, 2023
Liability for Future Policy Benefit, before Reinsurance [Abstract]  
Schedule of Future Policyholder Benefits, Life and Annuity [Table Text Block] The following table presents the components of the Company's liabilities for life and annuity benefits.
(dollars in thousands)September 30, 2023December 31, 2022
Liability for future policyholder benefits$508,436 $554,366 
Deferred profit liability52,034 48,569 
Other39,786 47,786 
Total$600,256 $650,721 
Liability for Future Policy Benefit, Activity [Table Text Block] The following table presents a rollforward of the present value of the liability for future policyholder benefits.
Nine Months Ended September 30,
(dollars in thousands)20232022
Liability for future policyholder benefits, beginning of year$554,366 $821,632 
Liability for future policyholder benefits at original discount rate, beginning of year667,761 745,313 
Effect of changes in cash flow assumptions— — 
Effect of actual variances from expected experience(5,890)(3,859)
Adjusted liability for future policyholder benefits, beginning of year661,871 741,454 
Interest accretion11,251 11,909 
Benefit payments(39,819)(40,643)
Effect of foreign currency rate changes(356)(77,166)
Liability for future policyholder benefits at original discount rate, end of period632,947 635,554 
Cumulative effect of changes in discount rate assumptions(124,511)(112,459)
Liability for future policyholder benefits, end of period (1)
$508,436 $523,095 
(1)    The undiscounted liability for future policyholder benefits was $813.6 million and $822.3 million as of September 30, 2023 and 2022, respectively.
Schedule of Additional Details of Liability for Future Policyholder Benefits, Life and Annuity [Table Text Block]
The following table summarizes additional details for the Company's liability for future policyholder benefits.

September 30, 2023December 31, 2022
Weighted-average interest rate:
Interest accretion rate2.3 %2.3 %
Current discount rate4.7 %4.3 %
Weighted-average liability duration8.2 years8.6 years