v2.4.0.6
FAIR VALUE MEASUREMENTS Table 1 (Details) (Recurring Fair Value Measurements, USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
Fair Value Assets and Liabilities Measured on Recurring Basis    
Fair Value Assets and Liabilities Measured on Recurring Basis $ (40,798) $ (12,444)
Fair Value Level 1
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Fair Value Assets and Liabilities Measured on Recurring Basis 13,405 5,506
Fair Value Level 2
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Fair Value Assets and Liabilities Measured on Recurring Basis (54,203) (17,950)
Fair Value Level 3
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Fair Value Assets and Liabilities Measured on Recurring Basis 0 0
Other current assets
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Product Imbalances 898 2,117
Commodity derivatives 21,378 12,112
Other current assets | Fair Value Level 1
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Product Imbalances 898 2,117
Commodity derivatives 19,013 10,282
Other current assets | Fair Value Level 2
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Product Imbalances 0 0
Commodity derivatives 2,365 1,830
Other current assets | Fair Value Level 3
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Product Imbalances 0 0
Commodity derivatives 0 0
Other long-term assets, net
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Commodity derivatives 6,675 27,084
Interest Rate Swaps   2,335
Other long-term assets, net | Fair Value Level 1
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Commodity derivatives 0 0
Interest Rate Swaps   0
Other long-term assets, net | Fair Value Level 2
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Commodity derivatives 6,675 27,084
Interest Rate Swaps   2,335
Other long-term assets, net | Fair Value Level 3
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Commodity derivatives 0 0
Interest Rate Swaps   0
Accrued liabilities
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Product Imbalances (577) (1,469)
Commodity derivatives (26,790) (5,424)
Interest Rate Swaps (41,117) (22,009)
Accrued liabilities | Fair Value Level 1
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Product Imbalances (577) (1,469)
Commodity derivatives (5,929) (5,424)
Interest Rate Swaps 0 0
Accrued liabilities | Fair Value Level 2
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Product Imbalances 0 0
Commodity derivatives (20,861) 0
Interest Rate Swaps (41,117) (22,009)
Accrued liabilities | Fair Value Level 3
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Product Imbalances 0 0
Commodity derivatives 0 0
Interest Rate Swaps 0 0
Other long-term liabilities
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Commodity derivatives (1,265)  
Interest Rate Swaps   (27,190)
Other long-term liabilities | Fair Value Level 1
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Commodity derivatives 0  
Interest Rate Swaps   0
Other long-term liabilities | Fair Value Level 2
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Commodity derivatives (1,265)  
Interest Rate Swaps   (27,190)
Other long-term liabilities | Fair Value Level 3
    
Fair Value Assets and Liabilities Measured on Recurring Basis    
Commodity derivatives 0  
Interest Rate Swaps   $ 0