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Derivative Financial Instruments Gains and Losses (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2015 | Sep. 30, 2014 | Sep. 30, 2015 | Sep. 30, 2014
Gain and loss from derivative cash settlements and changes in fair value of derivative contracts |  |  |  |  |
Total Derivative Settlement Gain (Loss) | [1] | $ 113,695 | $ (274) | $ 387,719 | $ (62,894)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net | [2] | 212,253 | 190,661 | 285,491 | (33,470)
Crude oil |  |  |  |  |
Gain and loss from derivative cash settlements and changes in fair value of derivative contracts |  |  |  |  |
Total Derivative Settlement Gain (Loss) |  | 90,493 | (517) | 270,622 | (27,435)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net |  | 131,728 | 140,912 | 138,839 | 15,367
Natural Gas |  |  |  |  |
Gain and loss from derivative cash settlements and changes in fair value of derivative contracts |  |  |  |  |
Total Derivative Settlement Gain (Loss) | [3] | 19,167 | (1,687) | 92,279 | (28,563)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net |  | 66,538 | 41,352 | 142,807 | (46,263)
Gain on Early Settlement of Derivatives |  |  |  | (15,300) |
Natural Gas Liquids [Member] |  |  |  |  |
Gain and loss from derivative cash settlements and changes in fair value of derivative contracts |  |  |  |  |
Total Derivative Settlement Gain (Loss) |  | 4,035 | 1,930 | 24,818 | (6,896)
Derivative Instruments Not Designated as Hedging Instruments, Gain (Loss), Net |  | $ 13,987 | $ 8,397 | $ 3,845 | $ (2,574)
[1] | Total derivative settlement (gain) loss is reported net of the change in accrued settlements between periods in the derivative cash settlements line item on the condensed consolidated statements of cash flows within net cash provided by operating activities.
[2] | Total derivative (gain) loss is reported in the derivative (gain) loss line item on the condensed consolidated statements of cash flows within net cash provided by operating activities.
[3] | Natural gas derivative settlements for the nine months ended September 30, 2015, include a $15.3 million gain recorded in the second quarter of 2015 on the early settlement of futures contracts as a result of divesting of the Company’s Mid-Continent assets.

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- Definition Amount of realized and unrealized gain (loss) of derivative instruments not designated or qualifying as hedging instruments. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=56946850&loc=SL5624171-113959 + Details
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