Derivative Instruments and Hedging Activities (Narrative) (Details) (USD $)	3 Months Ended
	Mar. 31, 2015		Mar. 31, 2014
Derivative [Line Items]
Maturity period	11 months
Derivatives not designated as hedging instruments
Derivative [Line Items]
Total non-designated derivative realized (gain) loss, net	$ (3,740,000)		$ 0
Derivatives not designated as hedging instruments | Commodity options
Derivative [Line Items]
Notional amount	8,100,000
Total non-designated derivative realized (gain) loss, net	429,000		0
Derivatives not designated as hedging instruments | Foreign currency option
Derivative [Line Items]
Notional amount	66,400,000
Derivatives not designated as hedging instruments | Foreign exchange options
Derivative [Line Items]
Total non-designated derivative realized (gain) loss, net	(4,169,000)	[1]	0	[1]
Cash Flow Hedges | Derivatives not designated as hedging instruments | Foreign exchange options
Derivative [Line Items]
Total non-designated derivative realized (gain) loss, net	$ 182,000	[1]

[1] Includes a loss of $182,000 for the discontinuation of cash flow hedges for which the forecasted transactions are not expected to occur within the originally forecasted time frame.