Derivative Instruments and Hedging Activities (Narrative) (Details) - USD ($)	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014
Derivative [Line Items]
Maturity period	6 months
Total non-designated derivative realized loss, net	$ 5,150,000	$ 1,061,000
Foreign exchange options
Derivative [Line Items]
Total non-designated derivative realized loss, net	5,736,000	1,015,000
Commodity options
Derivative [Line Items]
Total non-designated derivative realized loss, net	(399,000)	$ (685,000)
Derivatives not designated as hedging instruments | Foreign exchange options
Derivative [Line Items]
Notional amount	12,000,000
Derivatives not designated as hedging instruments | Forward contracts
Derivative [Line Items]
Notional amount	3,756,000
Derivatives not designated as hedging instruments | Commodity options
Derivative [Line Items]
Notional amount	810,000
Cash Flow Hedges | Derivatives not designated as hedging instruments | Foreign exchange options
Derivative [Line Items]
Total non-designated derivative realized loss, net	$ 182,000