Quarterly report pursuant to Section 13 or 15(d)

Derivative Instruments and Hedging Activities (Derivative Netting Adjustments) (Details)

v2.4.0.8
Derivative Instruments and Hedging Activities (Derivative Netting Adjustments) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Offsetting Assets and Liabilities [Line Items]    
Derivative Assets $ 6,011 $ 60
Derivative Liabilities (1,330) (1,108)
Current assets: Fair value of hedging contracts [Member]
   
Offsetting Assets and Liabilities [Line Items]    
Derivative Asset, Fair Value, Gross Asset 4,968  
Derivative Asset, Fair Value, Gross Liability (126)  
Derivative Assets 4,842  
Long-term assets: Fair value of hedging contracts [Member]
   
Offsetting Assets and Liabilities [Line Items]    
Derivative Asset, Fair Value, Gross Asset 1,169  
Derivative Assets 1,169  
Current liabilities: Fair value of hedging contracts [Member]
   
Offsetting Assets and Liabilities [Line Items]    
Derivative Liability, Fair Value, Gross Liability (591)  
Derivative Liability, Fair Value, Gross Asset 126  
Derivative Liabilities (465)  
Long-term liabilities: Fair value of hedging contracts [Member]
   
Offsetting Assets and Liabilities [Line Items]    
Derivative Liability, Fair Value, Gross Liability (865)  
Derivative Liabilities $ (865)