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Retirement And Other Employee Benefits (Estimated Future Benefit Payments From The Plans) (Details)
$ in Thousands
Dec. 31, 2015
USD ($)
Pension Benefits  
Defined Benefit Plan Disclosure [Line Items]  
2016 $ 60,555
2017 58,245
2018 57,881
2019 60,056
2020 75,144
2021-2025 394,654
Total 706,535
Retirement Health Benefits  
Defined Benefit Plan Disclosure [Line Items]  
2016 4,000
2017 4,361
2018 4,708
2019 5,066
2020 5,446
2021-2025 32,844
Total $ 56,425