Derivative Instruments and Hedging Activities (Derivatives Not Designated as Hedging Instruments) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Total non-designated derivative realized (gain) loss, net	$ (5,150)	$ (1,061)
Commodity options
Derivative [Line Items]
Total non-designated derivative realized (gain) loss, net	399	685
Foreign exchange forwards
Derivative [Line Items]
Total non-designated derivative realized (gain) loss, net	187	(731)
Foreign exchange options
Derivative [Line Items]
Total non-designated derivative realized (gain) loss, net	$ (5,736)	$ (1,015)