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CONSOLIDATED STATEMENTS OF OPERATIONS (USD $) In Thousands, except Per Share data, unless otherwise specified | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2013 | Jun. 30, 2012 | Jun. 30, 2013 | Jun. 30, 2012
Revenues and other income: |  |  |  |
Natural gas, NGLs and oil sales | $ 437,678 | $ 298,349 | $ 835,917 | $ 615,966
Derivative fair value income | 137,760 | 148,569 | 37,885 | 87,736
Gain (loss) on the sale of assets | 83,287 | (3,227) | 83,121 | (13,653)
Brokered natural gas, marketing and other | 14,631 | 5,240 | 35,672 | 9,837
Total revenues and other income | 673,356 | 448,931 | 992,595 | 699,886
Costs and expenses: |  |  |  |
Direct operating | 32,636 | 27,041 | 62,824 | 56,063
Transportation, gathering and compression | 66,048 | 44,744 | 128,464 | 85,564
Production and ad valorem taxes | 11,113 | 11,786 | 22,496 | 48,420
Brokered natural gas and marketing | 16,662 | 6,491 | 38,977 | 10,553
Exploration | 13,068 | 15,517 | 29,848 | 37,033
Abandonment and impairment of unproved properties | 19,156 | 43,641 | 34,374 | 63,930
General and administrative | 101,987 | 44,005 | 186,045 | 82,734
Deferred compensation plan | (6,878) | 9,333 | 35,482 | 1,503
Interest expense | 45,071 | 42,888 | 87,281 | 80,093
Loss on early extinguishment of debt | 12,280 |  | 12,280 |
Depletion, depreciation and amortization | 120,736 | 108,802 | 235,837 | 208,953
Total costs and expenses | 431,879 | 354,248 | 873,908 | 674,846
Income from operations before income taxes | 241,477 | 94,683 | 118,687 | 25,040
Income tax expense (benefit) |  |  |  |
Current | (25) |  |  |
Deferred | 97,519 | 39,007 | 50,314 | 11,164
Total income tax expense | 97,494 | 39,007 | 50,314 | 11,164
Net income | $ 143,983 | $ 55,676 | $ 68,373 | $ 13,876
Net income per common share: |  |  |  |
Basic | $ 0.88 | $ 0.34 | $ 0.42 | $ 0.09
Diluted | $ 0.88 | $ 0.34 | $ 0.42 | $ 0.09
Dividends per common share | $ 0.04 | $ 0.04 | $ 0.08 | $ 0.08
Weighted average common shares outstanding: |  |  |  |
Basic | 160,565 | 159,412 | 160,346 | 159,162
Diluted | 161,414 | 160,030 | 161,223 | 159,949

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- Definition The adjustment to expense previously capitalized costs of drilling exploratory wells when proved reserves are not found or when the entity obtains information that raises substantial doubt about the economic or operational viability of the project. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 28 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6943989&loc=d3e3602-108585 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section 40 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6475089&loc=d3e66625-109467 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section 35 -Paragraph 11 -URI http://asc.fasb.org/extlink&oid=6475018&loc=d3e66150-109466 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section 40 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6475089&loc=d3e66584-109467 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 360 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6475089&loc=d3e66610-109467 Reference 6: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Statement of Financial Accounting Standard (FAS) -Number 19 -Paragraph 27, 28, 40, 41 -LegacyDoc This reference is SUPERSEDED by the Accounting Standards Codification effective for interim and annual periods ending after September 15, 2009. This reference is included to help users transition from the previous accounting hierarchy and will be removed from future versions of this taxonomy. + Details
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