v2.4.0.8
DERIVATIVES AND RISK MANAGEMENT ACTIVITIES Table 1 (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Derivatives, Fair Value    
Asset Derivatives $ 30,785 $ 42,022
Liability Derivatives (22,392) (33,905)
Designated as Hedging Instrument | Commodity contracts | Other current assets
   
Derivatives, Fair Value    
Asset Derivatives 470 0
Liability Derivatives (63) 0
Designated as Hedging Instrument | Commodity contracts | Accrued liabilities
   
Derivatives, Fair Value    
Asset Derivatives 0 0
Liability Derivatives 0 (130)
Not Designated as Hedging Instrument
   
Derivatives, Fair Value    
Asset Derivatives 30,315 42,022
Liability Derivatives (22,329) (33,775)
Not Designated as Hedging Instrument | Commodity contracts | Other current assets
   
Derivatives, Fair Value    
Asset Derivatives 25,508 16,168
Liability Derivatives (16,035) (11,220)
Not Designated as Hedging Instrument | Commodity contracts | Other long-term assets, net
   
Derivatives, Fair Value    
Asset Derivatives 1,754 15,883
Liability Derivatives (1,521) (8,906)
Not Designated as Hedging Instrument | Commodity contracts | Accrued liabilities
   
Derivatives, Fair Value    
Asset Derivatives 2,807 4,523
Liability Derivatives (4,422) (6,626)
Not Designated as Hedging Instrument | Commodity contracts | Other long-term liabilities
   
Derivatives, Fair Value    
Asset Derivatives 246 5,448
Liability Derivatives $ (351) $ (7,023)