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Derivative Activities - Effects of Derivatives on Consolidated Statements of Operations (Detail) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
Derivative [Line Items] |  |  |  |
Derivative Fair Value (Loss) Income | $ (88,426) | $ 64,556 | $ 188,326 | $ (11,334)
Swaptions |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative Fair Value (Loss) Income | (7,602) |  | (7,602) |
Collars |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative Fair Value (Loss) Income | 956 | 1,320 | 15,221 | 1,320
Puts |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative Fair Value (Loss) Income | (73) | 2,842 | 9,646 | 2,842
Calls |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative Fair Value (Loss) Income | 104 |  | 1,144 |
Basis Swaps |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative Fair Value (Loss) Income | 6,113 | 21,853 | (2,554) | 24,929
Commodity | Swaps |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative Fair Value (Loss) Income | (87,861) | 38,662 | 172,457 | (40,270)
Freight | Commodity | Swaps |  |  |  |
Derivative [Line Items] |  |  |  |
Derivative Fair Value (Loss) Income | $ (63) | $ (121) | $ 14 | $ (155)

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- Definition Amount of increase (decrease) in the fair value of derivatives recognized in the income statement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4A -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5618551-113959 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (a),(c),(d),(e) -URI http://asc.fasb.org/extlink&oid=84234895&loc=SL5624171-113959 + Details
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