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CONSOLIDATED STATEMENTS OF OPERATIONS - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Revenue: |  |  |
Revenue | $ 904,441 | $ 794,655 | $ 807,069
Cost of sales (excluding depreciation and amortization): |  |  |
Total cost of sales, (excluding depreciation and amortization) | 464,367 | 418,922 | 379,919
Selling, general and administrative | 101,563 | 111,483 | 114,470
Depreciation and amortization | 174,946 | 188,563 | 208,986
Long-lived asset impairment | 28,127 | 29,142 | 87,435
Restatement and other charges | 19 | 4,370 | 13,470
Restructuring and other charges | 0 | 1,386 | 16,901
Interest expense | 93,328 | 88,760 | 83,899
Debt extinguishment loss | 2,450 | 291 | 0
Merger-related costs | 10,162 | 275 | 0
Other income, net | (5,831) | (5,918) | (8,590)
Income (loss) before income taxes | 35,310 | (42,619) | (89,421)
Provision for (benefit from) income taxes | 6,150 | (61,083) | (24,604)
Income (loss) from continuing operations | 29,160 | 18,464 | (64,817)
Loss from discontinued operations, net of tax | 0 | (54) | (426)
Net income (loss) | 29,160 | 18,410 | (65,243)
Less: Net (income) loss attributable to the noncontrolling interest | (8,097) | 543 | 10,688
Net income (loss) attributable to Archrock stockholders | $ 21,063 | $ 18,953 | $ (54,555)
Basic and diluted net income (loss) per common share: |  |  |
Net income (loss) from continuing operations attributable to Archrock common stockholders (usd per share) | $ 0.19 | $ 0.26 | $ (0.79)
Loss from discontinued operations attributable to Archrock common stockholders (usd per share) | 0.00 | 0.00 | (0.01)
Net income (loss) attributable to Archrock common stockholders (usd per share) | $ 0.19 | $ 0.26 | $ (0.80)
Weighted average common shares outstanding used in income (loss) per common share: |  |  |
Basic (in shares) | 109,305 | 69,552 | 68,993
Diluted (in shares) | 109,421 | 69,664 | 68,993
Contract Operations | Contract operations |  |  |
Revenue: |  |  |
Revenue | $ 672,536 | $ 610,921 | $ 647,828
Cost of sales (excluding depreciation and amortization): |  |  |
Total cost of sales, (excluding depreciation and amortization) | 273,013 | 263,005 | 247,040
Aftermarket Services | Aftermarket services |  |  |
Revenue: |  |  |
Revenue | 231,905 | 183,734 | 159,241
Cost of sales (excluding depreciation and amortization): |  |  |
Total cost of sales, (excluding depreciation and amortization) | $ 191,354 | $ 155,917 | $ 132,879

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