|
Financial Instruments - Fair Value of Financial Instruments by Balance Sheet Location (Details) (USD $)
In Thousands, unless otherwise specified |
3 Months Ended | 3 Months Ended | 3 Months Ended | |||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
|
Mar. 31, 2013
|
Mar. 31, 2012
|
Mar. 31, 2013
Prepaid Expenses and Other [Member]
Fair Value, Inputs, Level 2 [Member]
Fair Value, Measurements, Recurring [Member]
|
Mar. 31, 2013
Other Current Liabilities [Member]
Fair Value, Inputs, Level 2 [Member]
Fair Value, Measurements, Recurring [Member]
|
Mar. 31, 2013
LNG Inventory Derivatives [Member]
|
Mar. 31, 2012
LNG Inventory Derivatives [Member]
|
Dec. 31, 2012
LNG Inventory Derivatives [Member]
Fair Value, Inputs, Level 2 [Member]
Fair Value, Measurements, Recurring [Member]
|
Mar. 31, 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]
|
Mar. 31, 2013
Fuel Derivatives [Member]
|
Mar. 31, 2012
Fuel Derivatives [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]
|
Mar. 31, 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) | $ (17,468) | $ (836) | $ (524) | $ 1,859 | $ 515 | $ (836) | ||||||||
| Derivative Assets, Current | 420 | 237 | (420) | 237 | ||||||||||
| Derivative Liabilities, Current | $ (420) | $ (98) | $ (98) | $ 420 | ||||||||||