Retirement And Other Employee Benefits (Amount Recognized In Consolidated Balance Sheets) (Details) - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Pension Benefits
Defined Benefit Plan Disclosure [Line Items]
Assets	$ 0	$ 0	$ 18,078
Liabilities	(185,908)	(184,831)	(137,271)
Retirement Health Benefits
Defined Benefit Plan Disclosure [Line Items]
Assets	0	0	0
Liabilities	$ (46,654)	$ (46,238)	$ (32,075)