Quarterly report pursuant to Section 13 or 15(d)

Financial Instruments - Fair Value of Financial Instruments by Balance Sheet Location (Details)

v2.4.0.8
Financial Instruments - Fair Value of Financial Instruments by Balance Sheet Location (Details) (USD $)
In Thousands, unless otherwise specified
 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended 3 Months Ended 6 Months Ended
Jun. 30, 2013
Jun. 30, 2012
Jun. 30, 2013
Jun. 30, 2012
Mar. 31, 2013
LNG Inventory Derivatives [Member]
Mar. 31, 2012
LNG Inventory Derivatives [Member]
Jun. 30, 2013
LNG Inventory Derivatives [Member]
Jun. 30, 2012
LNG Inventory Derivatives [Member]
Jun. 30, 2013
LNG Inventory Derivatives [Member]
Fair Value, Inputs, Level 2 [Member]
Fair Value, Measurements, Recurring [Member]
Dec. 31, 2012
LNG Inventory Derivatives [Member]
Fair Value, Inputs, Level 2 [Member]
Fair Value, Measurements, Recurring [Member]
Jun. 30, 2013
LNG Inventory Derivatives [Member]
Other Current Liabilities [Member]
Fair Value, Inputs, Level 2 [Member]
Fair Value, Measurements, Recurring [Member]
Dec. 31, 2012
LNG Inventory Derivatives [Member]
Prepaid Expenses And Other [Member]
Fair Value, Inputs, Level 2 [Member]
Fair Value, Measurements, Recurring [Member]
Jun. 30, 2013
Fuel Derivatives [Member]
Jun. 30, 2012
Fuel Derivatives [Member]
Jun. 30, 2013
Fuel Derivatives [Member]
Jun. 30, 2012
Fuel Derivatives [Member]
Jun. 30, 2013
Fuel Derivatives [Member]
Fair Value, Inputs, Level 2 [Member]
Dec. 31, 2012
Fuel Derivatives [Member]
Fair Value, Inputs, Level 2 [Member]
Dec. 31, 2012
Fuel Derivatives [Member]
Other Current Liabilities [Member]
Fair Value, Inputs, Level 2 [Member]
Fair Value, Measurements, Recurring [Member]
Jun. 30, 2013
Fuel Derivatives [Member]
Prepaid Expenses And Other [Member]
Fair Value, Inputs, Level 2 [Member]
Fair Value, Measurements, Recurring [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]                                        
Derivative gain (loss) $ 95,509 $ 261 $ 78,041 $ (575) $ 892 $ (995) $ 368 $ 864         $ (504) $ 261 $ 11 $ (575)        
Derivative Assets, Current                 755 237 755 237                
Derivative Liabilities, Current                                 $ (240) $ (98) $ (98) $ (240)