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Derivative Instruments and Hedging Activities (Derivatives Not Designated as Hedging Instruments) (Details) (Derivatives not designated as hedging instruments, USD $)
3 Months Ended 9 Months Ended
Sep. 30, 2014
Sep. 30, 2013
Sep. 30, 2014
Sep. 30, 2013
Derivative [Line Items]        
Total non-designated derivative realized (gain) loss, net $ (693,000) $ 0 $ (421,000) $ 0
Commodity options
       
Derivative [Line Items]        
Notional amount 12,600,000   12,600,000  
Total non-designated derivative realized (gain) loss, net (153,000) 0 119,000 0
Foreign exchange forward
       
Derivative [Line Items]        
Notional amount 11,200,000   11,200,000  
Total non-designated derivative realized (gain) loss, net (237,000) 0 (237,000) 0
Foreign exchange forward
       
Derivative [Line Items]        
Notional amount 94,000,000   94,000,000  
Total non-designated derivative realized (gain) loss, net $ (303,000) [1] $ 0 [1] $ (303,000) [1] $ 0 [1]
[1] Includes a loss of $321,000 for the discontinuation of cash flow hedges for which the forecasted transactions are not expected to occur within the originally forecasted time frame.