Annual report pursuant to Section 13 and 15(d)

Financial Instruments - Fair Value and Settlements of Derivatives (Details)

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Financial Instruments - Fair Value and Settlements of Derivatives (Details) (USD $)
 12 Months Ended
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2010
Derivative Instruments, Gain (Loss) [Line Items]      
Derivative gain (loss), net $ 58,000 $ (2,251,000) $ 461,000
Collateral deposited 900,000 800,000  
Fuel Derivatives [Member]
      
Derivative Instruments, Gain (Loss) [Line Items]      
Derivative gain (loss), net (622,000)    
LNG Inventory Derivatives [Member]
      
Derivative Instruments, Gain (Loss) [Line Items]      
Derivative gain (loss), net     0
Cheniere Marketing, LLC [Member] | LNG Lease Agreement [Member] | LNG Inventory Derivatives [Member]
      
Derivative Instruments, Gain (Loss) [Line Items]      
Derivative gain (loss), net $ 1,036,000 $ 2,300,000