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
Mar. 31, 2014
Dec. 31, 2013
Offsetting Assets and Liabilities [Line Items]    
Derivative Assets   $ 60
Liability Fair Value (2,686) (1,108)
Current assets: Fair value of hedging contracts [Member]
   
Offsetting Assets and Liabilities [Line Items]    
Derivative Asset, Fair Value, Gross Asset 59  
Derivative Asset, Fair Value, Gross Liability (59)  
Current liabilities: Fair value of hedging contracts [Member]
   
Offsetting Assets and Liabilities [Line Items]    
Derivative Liability, Fair Value, Gross Liability (2,704)  
Derivative Liability, Fair Value, Gross Asset 59  
Liability Fair Value (2,645)  
Long-term liabilities: Fair value of hedging contracts [Member]
   
Offsetting Assets and Liabilities [Line Items]    
Derivative Liability, Fair Value, Gross Liability (41)  
Liability Fair Value (41)  
Not Designated as Hedging Instrument [Member]
   
Offsetting Assets and Liabilities [Line Items]    
Derivative Assets   60
Liability Fair Value $ (2,686) $ (1,108)