Pensions And Other Employee Benefits Plans (Changes In Fair Value Of Pension Plan Assets) (Details) (USD $) In Thousands, unless otherwise specified	12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	$ 54,431	$ 16,804
Unrealized gain/(loss)	(1,372)	2,851
Realized gain/(loss)	3,825	(2,527)
Purchases	423	38,700
Sales	(2,376)	(1,397)
Asset transfer due to sale	(52,443)
Ending balance	2,488	54,431
Private Equity Funds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	6,870	6,934
Unrealized gain/(loss)	(441)	786
Realized gain/(loss)	413
Purchases	400	200
Sales	(1,600)	(1,050)
Asset transfer due to sale	(5,359)
Ending balance	283	6,870
Equity Long/Short Fund [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	10,557	5,882
Unrealized gain/(loss)	(1,027)	(325)
Realized gain/(loss)	2,221
Purchases		5,000
Sales		0
Asset transfer due to sale	(11,069)
Ending balance	682	10,557
Distressed Opportunity Ltd. Partnership [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	5,217	3,598
Unrealized gain/(loss)	(241)	(381)
Realized gain/(loss)	211
Purchases		2,000
Sales		0
Asset transfer due to sale	(4,888)
Ending balance	299	5,217
Diversified Alternatives Fund [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance		353
Unrealized gain/(loss)		2,521
Realized gain/(loss)		(2,527)
Sales		(347)
Ending balance		0
Other Limited Partnership [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	36	37
Unrealized gain/(loss)	2	(1)
Purchases	23
Sales	(28)	0
Ending balance	33	36
Multi Strategy Funds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	19,916
Unrealized gain/(loss)	335	(84)
Realized gain/(loss)	142
Purchases		20,000
Sales		0
Asset transfer due to sale	(19,202)
Ending balance	1,191	19,916
Real Estate Funds [Member]
Fair Value, Assets Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Beginning balance	11,835
Unrealized gain/(loss)		335
Realized gain/(loss)	838
Purchases		11,500
Sales	(748)	0
Asset transfer due to sale	(11,925)
Ending balance		$ 11,835