Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments - Fair Value of Derivative Assets and Liabilities (Details)

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Financial Instruments - Fair Value of Derivative Assets and Liabilities (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
LNG Inventory Derivatives [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net $ (219) $ (171)
LNG Inventory Derivatives [Member] | Fair Value, Inputs, Level 1 [Member]
    
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 [Member] | Fair Value, Inputs, Level 2 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net (219) (171)
LNG Inventory Derivatives [Member] | Fair Value, Inputs, Level 3 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net 0 0
Fuel Derivatives [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net (144) 126
Fuel Derivatives [Member] | Fair Value, Inputs, Level 1 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net 0 0
Fuel Derivatives [Member] | Fair Value, Inputs, Level 2 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net (144) 126
Fuel Derivatives [Member] | Fair Value, Inputs, Level 3 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net 0 0
Interest Rate Contract [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net 15,059 84,639
Interest Rate Contract [Member] | Fair Value, Inputs, Level 1 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net 0 0
Interest Rate Contract [Member] | Fair Value, Inputs, Level 2 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net 15,059 84,639
Interest Rate Contract [Member] | Fair Value, Inputs, Level 3 [Member]
    
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]    
Derivative Assets (Liabilities), at Fair Value, Net $ 0 $ 0