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CONDENSED CONSOLIDATED STATEMENT OF OPERATIONS (Unaudited) - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2017 | Sep. 30, 2016 | Sep. 30, 2017 | Sep. 30, 2016
OPERATING REVENUES |  |  |  |
Natural gas | $ 323,319 | $ 260,200 | $ 1,152,089 | $ 711,010
Crude oil and condensate | 56,913 | 37,777 | 144,528 | 114,610
Gain (loss) on derivative instruments | (836) | 6,904 | 46,353 | (1,286)
Brokered natural gas | 3,528 | 3,641 | 12,260 | 9,417
Other | 2,492 | 1,907 | 8,486 | 5,435
TOTAL OPERATING REVENUES | 385,416 | 310,429 | 1,363,716 | 839,186
OPERATING EXPENSES |  |  |  |
Direct operations | 26,282 | 24,626 | 78,185 | 77,139
Transportation and gathering | 117,891 | 105,671 | 361,909 | 322,883
Brokered natural gas | 2,797 | 2,939 | 10,262 | 7,526
Taxes other than income | 9,194 | 8,771 | 26,562 | 23,737
Exploration | 6,466 | 2,988 | 16,623 | 13,109
Depreciation, depletion and amortization | 146,267 | 139,490 | 425,689 | 448,910
Impairment of oil and gas properties | 0 | 0 | 68,555 | 0
General and administrative | 23,244 | 19,374 | 70,902 | 67,192
TOTAL OPERATING EXPENSES | 332,141 | 303,859 | 1,058,687 | 960,496
Earnings (loss) on equity method investments | (1,417) | (1,727) | (3,986) | 208
Loss on sale of assets | (11,872) | (1,245) | (13,498) | (768)
INCOME (LOSS) FROM OPERATIONS | 39,986 | 3,598 | 287,545 | (121,870)
Interest expense, net | 20,331 | 21,483 | 61,720 | 67,821
Loss on debt extinguishment | 0 | 0 | 0 | 4,709
Other expense (income) | (5,083) | 402 | (4,974) | 1,207
Income (loss) before income taxes | 24,738 | (18,287) | 230,799 | (195,607)
Income tax expense (benefit) | 7,151 | (8,027) | 85,965 | (71,243)
NET INCOME (LOSS) | $ 17,587 | $ (10,260) | $ 144,834 | $ (124,364)
Earnings (loss) per share |  |  |  |
Basic (in dollars per share) | $ 0.04 | $ (0.02) | $ 0.31 | $ (0.27)
Diluted (in dollars per share) | $ 0.04 | $ (0.02) | $ 0.31 | $ (0.27)
Weighted-average common shares outstanding |  |  |  |
Basic (in shares) | 462,498 | 465,149 | 464,194 | 454,060
Diluted (in shares) | 464,780 | 465,149 | 466,010 | 454,060
Dividends per common share (in dollars per share) | $ 0.05 | $ 0.02 | $ 0.12 | $ 0.06

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- Definition Costs incurred in brokering natural gas, a result of buying and selling natural gas in back-to-back transactions, during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 23 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62136-109447 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.2) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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- Definition Revenue related to brokering natural gas. The entity realizes brokered margin as a result of buying and selling natural gas in back-to-back transactions. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.1) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 24 -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62246-109447 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 932 -SubTopic 235 -Section 50 -Paragraph 23 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=68064819&loc=d3e62136-109447 + Details
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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=96866604&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=82851474&loc=d3e511914-122862 + Details
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- Definition The difference between the book value and the sale price of options, swaps, futures, forward contracts, and other derivative instruments. This element refers to the gain (loss) included in earnings. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 225 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-04.13(h)) -URI http://asc.fasb.org/extlink&oid=6879574&loc=d3e536633-122882 Reference 2: 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=98514028&loc=d3e3602-108585 + Details
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- Definition Difference between the fair value of payments made and the carrying amount of debt which is extinguished prior to maturity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12317-112629 Reference 2: 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=98514028&loc=d3e3602-108585 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 50 -Section 40 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=49170532&loc=d3e12355-112629 + Details
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