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CONDENSED CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 6 Months Ended
--- | --- | ---
Jun. 30, 2018 | Jun. 30, 2017 | Jun. 30, 2018 | Jun. 30, 2017
Oil, natural gas and natural gas liquids sales: |  |  |  |
Other | $ 108 | $ 190 | $ 263 | $ 1,023
Total operating revenues | 55,415 | 120,137 | 104,670 | 255,735
Production: |  |  |  |
Lease operating | 5,314 | 20,380 | 10,229 | 41,024
Workover and other | 1,956 | 7,128 | 3,317 | 18,569
Taxes other than income | 3,226 | 10,727 | 6,255 | 22,303
Gathering and other | 5,956 | 11,812 | 12,378 | 23,754
Restructuring | 27 | 50 | 128 | 805
General and administrative | 14,255 | 26,922 | 29,465 | 47,771
Depletion, depreciation and accretion | 16,096 | 31,962 | 32,087 | 64,848
(Gain) loss on sale of oil and natural gas properties | 2,225 | (4,500) | 5,904 | (235,690)
Total operating expenses | 49,055 | 104,481 | 99,763 | (16,616)
Income (loss) from operations | 6,360 | 15,656 | 4,907 | 272,351
Other income (expenses): |  |  |  |
Net gain (loss) on derivative contracts | (12,100) | 24,156 | (6,197) | 50,554
Interest expense and other | (10,534) | (19,635) | (17,582) | (44,478)
Gain (loss) on extinguishment of debt |  |  |  | (56,898)
Total other income (expenses) | (22,634) | 4,521 | (23,779) | (50,822)
Income (loss) before income taxes | (16,274) | 20,177 | (18,872) | 221,529
Income tax benefit (provision) |  |  |  | (12,000)
Net income (loss) | (16,274) | 20,177 | (18,872) | 209,529
Non-cash preferred dividend |  | (47,206) |  | (48,007)
Net income (loss) available to common stockholders | $ (16,274) | $ (27,029) | $ (18,872) | $ 161,522
Net income (loss) per share of common stock: |  |  |  |
Basic (in dollars per share) | $ (0.10) | $ (0.19) | $ (0.12) | $ 1.37
Diluted (in dollars per share) | $ (0.10) | $ (0.19) | $ (0.12) | $ 1.37
Weighted average common shares outstanding: |  |  |  |
Basic (in shares) | 157,943 | 143,545 | 155,925 | 117,554
Diluted (in shares) | 157,943 | 143,545 | 155,925 | 118,209
Total oil, natural gas and natural gas liquids sales |  |  |  |
Oil, natural gas and natural gas liquids sales: |  |  |  |
Total operating revenues | $ 55,307 | $ 119,947 | $ 104,407 | $ 254,712
Oil |  |  |  |
Oil, natural gas and natural gas liquids sales: |  |  |  |
Total operating revenues | 48,756 | 108,695 | 91,825 | 231,216
Natural gas |  |  |  |
Oil, natural gas and natural gas liquids sales: |  |  |  |
Total operating revenues | 1,560 | 5,946 | 3,879 | 12,165
Natural gas liquids |  |  |  |
Oil, natural gas and natural gas liquids sales: |  |  |  |
Total operating revenues | $ 4,991 | $ 5,306 | $ 8,703 | $ 11,331

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