Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments - Schedule of Fair Value Assets and Liabilities Measured on a Recurring Basis (Details)

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Financial Instruments - Schedule of Fair Value Assets and Liabilities Measured on a Recurring Basis (Details) (Recurring, USD $)
In Thousands, unless otherwise specified
Sep. 30, 2012
Dec. 31, 2011
LNG Inventory Derivatives | Quoted Prices in Active Markets (Level 1)
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net $ 0 $ 0
LNG Inventory Derivatives | Significant Unobservable Inputs (Level 3)
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net 0 0
LNG Inventory Derivatives | Total
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net (165) 1,610
LNG Inventory Derivatives | Other current liabilities | Significant Other Unobservable Inputs (Level 2)
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net (165)  
LNG Inventory Derivatives | Other assets | Significant Other Unobservable Inputs (Level 2)
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net   1,610
Fuel Derivatives | Quoted Prices in Active Markets (Level 1)
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net 0 0
Fuel Derivatives | Significant Unobservable Inputs (Level 3)
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net 0 0
Fuel Derivatives | Total
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net 60 (1,415)
Fuel Derivatives | Other current liabilities | Significant Other Unobservable Inputs (Level 2)
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net   (1,415)
Fuel Derivatives | Other assets | Significant Other Unobservable Inputs (Level 2)
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net 60  
Interest Rate Derivatives | Quoted Prices in Active Markets (Level 1)
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net 0 0
Interest Rate Derivatives | Significant Other Unobservable Inputs (Level 2)
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net (29,676) 0
Interest Rate Derivatives | Significant Unobservable Inputs (Level 3)
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net 0 0
Interest Rate Derivatives | Total
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net $ (29,676) $ 0