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v3.3.1.900

CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2015 | Dec. 31, 2014 | Dec. 31, 2013
Operating revenues: |  |  |
Oil, gas, and NGL production revenue | $ 1,499,905 | $ 2,481,544 | $ 2,199,550
Net gain on divestiture activity (note 3) | 43,031 | 646 | 27,974
Marketed gas system revenue | 9,485 | 24,897 | 60,039
Other operating revenues | 4,544 | 15,220 | 5,811
Total operating revenues and other income | 1,556,965 | 2,522,307 | 2,293,374
Operating Expenses |  |  |
Oil, gas, and NGL production expense | 723,633 | 715,878 | 597,045
Depletion, depreciation, amortization, and asset retirement obligation liability accretion | 921,009 | 767,532 | 822,872
Exploration | 120,569 | 129,857 | 74,104
Impairment of proved properties | 468,679 | 84,480 | 172,641
Abandonment and impairment of unproved properties | 78,643 | 75,638 | 46,105
Impairment of other property and equipment | 49,369 | 0 | 0
General and administrative | 157,668 | 167,103 | 149,551
Change In Net Profits Plan Liability | (19,525) | (29,849) | (21,842)
Derivative gain | (408,831) | (583,264) | (3,080)
Marketed gas system expense | 13,922 | 24,460 | 57,647
Other operating expenses | 30,612 | 4,658 | 30,076
Total operating expenses | 2,135,748 | 1,356,493 | 1,925,119
Income (loss) from operations | (578,783) | 1,165,814 | 368,255
Non-operating income (expense): |  |  |
Other, net | 649 | (2,561) | 67
Interest expense | (128,149) | (98,554) | (89,711)
Loss on extinguishment of debt | (16,578) | 0 | 0
Income (loss) before income taxes | (722,861) | 1,064,699 | 278,611
Income tax (expense) benefit | 275,151 | (398,648) | (107,676)
Net income (loss) | $ (447,710) | $ 666,051 | $ 170,935
Earnings Per Share, Basic [Abstract] |  |  |
Basic weighted-average common shares outstanding | 67,723 | 67,230 | 66,615
Basic net income (loss) per common share | $ (6.61) | $ 9.91 | $ 2.57
Earnings Per Share, Diluted [Abstract] |  |  |
Diluted weighted-average common shares outstanding | 67,723 | 68,044 | 67,998
Diluted net income (loss) per common share | $ (6.61) | $ 9.79 | $ 2.51

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- Definition Exploration expenses (including prospecting) related to oil and gas producing entities and would be included in operating expenses of that entity. Costs incurred in identifying areas that may warrant examination and in examining specific areas that are considered to have prospects of containing oil and gas reserves, including costs of drilling exploratory wells and exploratory-type stratigraphic test wells. Exploration costs may be incurred both before acquiring the related property (sometimes referred to in part as prospecting costs) and after acquiring the property. Principal types of exploration costs, which include depreciation and applicable operating costs of support equipment and facilities and other costs of exploration activities, are: (i) Costs of topographical, geographical and geophysical studies, rights of access to properties to conduct those studies, and salaries and other expenses of geologists, geophysical crews, and others conducting those studies. Collectively, these are sometimes referred to as geological and geophysical or "G&G" costs. (ii) Costs of carrying and retaining undeveloped properties, such as delay rentals, ad valorem taxes on properties, legal costs for title defense, and the maintenance of land and lease records. (iii) Dry hole contributions and bottom hole contributions. (iv) Costs of drilling and equipping exploratory wells. (v) Costs of drilling exploratory-type stratigraphic test wells. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section 25 -Paragraph 9 -URI http://asc.fasb.org/extlink&oid=56951519&loc=d3e64954-109465 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.4-10.(a)(15)) -URI http://asc.fasb.org/extlink&oid=50486907&loc=d3e511914-122862 + Details
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