Derivative Instruments - Gain (Loss) on Derivative Instruments (Details) - USD ($) $ in Thousands |
12 Months Ended | |||
|---|---|---|---|---|
Dec. 31, 2016 |
Dec. 31, 2015 |
Dec. 31, 2014 |
Dec. 31, 2013 |
|
| Derivative [Line Items] | ||||
| Gain due to changes in fair value of derivative instruments | $ (174,506) | $ 203,513 | $ 109,299 | |
| Natural gas derivatives | ||||
| Derivative [Line Items] | ||||
| Gain due to changes in fair value of derivative instruments | (165,933) | 182,993 | $ 103,128 | |
| Oil derivatives | ||||
| Derivative [Line Items] | ||||
| Gain due to changes in fair value of derivative instruments | (5,387) | 19,201 | 6,171 | |
| Natural gas liquids derivatives | ||||
| Derivative [Line Items] | ||||
| Gain due to changes in fair value of derivative instruments | $ (3,186) | $ 1,319 | $ 0 | |
| X | ||||||||||
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. No definition available.
|
| X | ||||||||||
- Definition Amount of gain (loss)recognized in the income statement from the hedging ineffectiveness of a fair value hedge. Reference 1: http://www.xbrl.org/2003/role/presentationRef
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|
| X | ||||||||||
- Details
|