Accumulated Other Comprehensive Loss (Reclassifications Out Of Accumulated Other Comprehensive Loss) (Details) (USD $)	3 Months Ended								12 Months Ended
	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2013	Sep. 30, 2013	Jun. 30, 2013	Mar. 31, 2013	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest Expense									$ (9,962,000)	$ (9,504,000)	$ (10,409,000)
Other revenues									1,858,000	2,122,000	2,387,000
(Loss) Income Before Provision (Benefit) for Income Taxes and Equity in Net Income of Unconsolidated Entities									(44,280,000)	7,925,000	22,020,000
(Expense) Benefit for Income Taxes									(10,429,000)	12,268,000	157,000
Net (Loss) Income	(48,253,000)	(2,565,000)	(664,000)	(3,217,000)	17,242,000	(2,222,000)	1,859,000	1,653,000	(54,699,000)	18,532,000	21,962,000
Amount Reclassified From Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Net (Loss) Income									(1,419,000)	(877,000)
Gains And Losses On Derivatives Fair Value [Member] | Amount Reclassified From Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
(Loss) Income Before Provision (Benefit) for Income Taxes and Equity in Net Income of Unconsolidated Entities									(1,679,000)	(2,227,000)
(Expense) Benefit for Income Taxes
Net (Loss) Income									(1,679,000)	(2,227,000)
Gains And Losses On Derivatives Fair Value [Member] | Interest Rate Contract [Member] | Amount Reclassified From Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Interest Expense									(1,483,000)	(2,093,000)
Gains And Losses On Derivatives Fair Value [Member] | Foreign Exchange Contracts [Member] | Amount Reclassified From Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Other revenues									(196,000)	(134,000)
Defined Benefit Pension Items [Member] | Amount Reclassified From Accumulated Other Comprehensive Loss [Member]
Reclassification Adjustment out of Accumulated Other Comprehensive Income [Line Items]
Prior service costs									97,000	97,000
Actuarial losses									163,000	1,253,000
(Loss) Income Before Provision (Benefit) for Income Taxes and Equity in Net Income of Unconsolidated Entities									260,000	1,350,000
(Expense) Benefit for Income Taxes
Net (Loss) Income									$ 260,000	$ 1,350,000