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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended
--- | ---
Mar. 31, 2014 | Mar. 31, 2013
Revenues |  |
Oil, natural gas and NGL | $ 405,316 | $ 478,017
Drilling and services | 17,080 | 17,370
Midstream and marketing | 17,910 | 13,032
Other | 2,750 | 3,271
Total revenues | 443,056 | 511,690
Expenses |  |
Production | 98,535 | 132,501
Production taxes | 7,807 | 9,439
Cost of sales | 12,481 | 16,317
Midstream and marketing | 16,000 | 11,803
Depreciation and depletion—oil and natural gas | 115,185 | 157,526
Depreciation and amortization—other | 15,522 | 15,336
Accretion of asset retirement obligations | 5,746 | 9,779
Impairment | 164,779 | 0
General and administrative | 38,538 | 79,444
Loss on derivative contracts | 42,491 | 40,897
(Gain) loss on sale of assets | (19) | 398,174
Total expenses | 517,065 | 871,216
Loss from operations | (74,009) | (359,526)
Other income (expense) |  |
Interest expense | (62,043) | (85,910)
Loss on extinguishment of debt | 0 | (82,005)
Other income, net | 2,094 | 611
Total other expense | (59,949) | (167,304)
Loss before income taxes | (133,958) | (526,830)
Income tax expense | 127 | 4,429
Net loss | (134,085) | (531,259)
Less: net loss attributable to noncontrolling interest | (6,070) | (51,919)
Net loss attributable to SandRidge Energy, Inc. | (128,015) | (479,340)
Preferred stock dividends | 13,881 | 13,881
Loss applicable to SandRidge Energy, Inc. common stockholders | $ (141,896) | $ (493,221)
Loss per share |  |
Basic (in dollars) | $ (0.29) | $ (1.03)
Diluted (in dollars) | $ (0.29) | $ (1.03)
Weighted average number of common shares outstanding |  |
Basic (in shares) | 484,798 | 477,826
Diluted (in shares) | 484,798 | 477,826

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- Definition The excess of unamortized costs capitalized within a cost center, less related deferred income taxes, over the cost center ceiling limitation, which is charged to expense for oil and gas producing companies that use full cost method of accounting for investments in oil and gas producing properties. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 10 -Paragraph c -Subparagraph 4(ii) -Article 4 + Details
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