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Quarterly Financial Results (Unaudited) (Details) - USD ($) $ / shares in Units, $ in Thousands | 3 Months Ended
--- | ---
Dec. 31, 2018 | Sep. 30, 2018 | Jun. 30, 2018 | Mar. 31, 2018 | Dec. 31, 2017 | Sep. 30, 2017 | Jun. 30, 2017 | Mar. 31, 2017
Quarterly Financial Information Disclosure [Abstract] |  |  |  |  |  |  |  |
Total revenues | $ 85,145 | $ 97,660 | $ 79,462 | $ 87,128 | $ 93,206 | $ 80,892 | $ 84,851 | $ 98,350
(Loss) income from operations | 52,847 | 12,430 | (33,685) | (41,967) | (18,230) | (16,267) | 23,348 | 50,780
Net Income (Loss), Including Portion Attributable to Noncontrolling Interest | $ 54,178 | $ 11,715 | $ (34,074) | $ (40,894) | $ (18,760) | $ (8,485) | $ 23,499 | $ 50,808
(Loss applicable) income available per share to SandRidge Energy, Inc. common stockholders |  |  |  |  |  |  |  |
Basic (in dollars per share) | $ 1.53 | $ 0.33 | $ (0.97) | $ (1.18) | $ (0.54) | $ (0.25) | $ 0.69 | $ 1.90
Diluted (in dollars per share) | $ 1.53 | $ 0.33 | $ (0.97) | $ (1.18) | $ (0.54) | $ (0.25) | $ 0.69 | $ 1.90
Loss (gain) on derivative contracts | $ (42,600) | $ 11,300 | $ 30,100 | $ 18,300 | $ 21,900 | $ 11,700 | $ (23,500) | $ (34,200)
Employee termination benefits |  |  |  | $ 31,600 |  |  | $ 4,400 |
Accelerated vesting of employment compensation |  |  | 6,500 |  |  |  |  |
Proxy contest |  |  | $ 7,200 |  |  |  |  |
Terminated merger costs |  |  |  |  | $ 8,200 |  |  |

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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/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4CC -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL109998890-113959 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 815 -SubTopic 10 -Section 50 -Paragraph 4C -Subparagraph (e) -URI http://asc.fasb.org/extlink&oid=109980867&loc=SL5624171-113959 + Details
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