Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments - Narrative (Details)

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Financial Instruments - Narrative (Details) (USD $)
 3 Months Ended 6 Months Ended
Jun. 30, 2012
Jun. 30, 2011
Jun. 30, 2012
Jun. 30, 2011
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
LNG Inventory Derivatives asset $ 38,000 [1]   $ 38,000 [1]  
Fuel Derivatives liability 664,000 [2]   664,000 [2]  
Marketing and trading revenues (200,000) 0 (900,000) 0
Derivative loss 261,000 (448,000) (575,000) (448,000)
Quoted Prices in Active Markets for Identical Instruments (Level 1)
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
LNG Inventory Derivatives asset 0 [1]   0 [1]  
Fuel Derivatives liability 0 [2]   0 [2]  
Significant Other Observable Inputs (Level 2)
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
LNG Inventory Derivatives asset 38,000 [1]   38,000 [1]  
Fuel Derivatives liability 664,000 [2]   664,000 [2]  
Significant Unobservable Inputs (Level 3)
        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
LNG Inventory Derivatives asset 0 [1]   0 [1]  
Fuel Derivatives liability $ 0 [2]   $ 0 [2]  
[1] LNG Inventory Derivatives asset is classified as other current assets on our Consolidated Balance Sheets. Changes in the fair value of LNG Inventory Derivatives are classified as revenues on our Consolidated Statements of Operations. We recorded revenues of $(0.2) million and zero related to LNG Inventory Derivatives in the three months ended June 30, 2012 and 2011, respectively. We recorded revenues of $0.9 million and zero related to LNG Inventory Derivatives in the six months ended June 30, 2012 and 2011, respectively.
[2] Fuel Derivatives liability is classified as other current liabilities on our Consolidated Balance Sheets. Changes in the fair value of Fuel Derivatives are classified as derivative gain (loss) on our Consolidated Statements of Operations. We recorded derivative gain of $0.3 million and derivative loss of $0.4 million related to Fuel Derivatives in the three months ended June 30, 2012 and 2011, respectively.