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Life And Annuity Benefits (Schedule of Liability for Future Policy Benefit, Activity) (Details) - USD ($)
$ in Thousands
 12 Months Ended
Dec. 31, 2024
Dec. 31, 2023
Dec. 31, 2022
Dec. 31, 2021
Undiscounted liability for future policy benefits $ 737,575 $ 824,642 $ 861,264  
Liability for future policyholder benefits, beginning of year 557,763 554,366 821,632  
Liability for future policyholder benefits at original discount rate, beginning of year 642,877 667,761 745,313  
Effect of changes in cash flow assumptions   0 0 $ 0
Effect of actual variances from expected experience   (4,745) (5,890) (3,859)
Adjusted liability for future policyholder benefits, beginning of year   638,132 661,871 $ 741,454
Interest accretion 13,996 14,889 15,625  
Benefit payments (49,200) (52,588) (53,232)  
Effect of foreign currency rate changes (26,126) 18,705 (36,086)  
Liability for future policyholder benefits at original discount rate, end of year 576,802 642,877 667,761  
Cumulative effect of changes in discount rate assumptions (85,432) (85,114) (113,395)  
Liability for future policyholder benefits, end of year $ 491,370 $ 557,763 $ 554,366