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v3.10.0.1

Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2018 | Dec. 31, 2017 | Dec. 31, 2016
Income Statement [Abstract] |  |  |
Revenues | $ 1,037,667 | $ 957,958 | $ 690,123
Cost of revenues | (927,335) | (868,866) | (648,065)
Gross profit | 110,332 | 89,092 | 42,058
General and administrative expenses | (50,620) | (48,351) | (36,844)
Other operating expense, net | (17,101) | (14,565) | (9,943)
Operating income (loss) | 42,611 | 26,176 | (4,729)
Interest income | 1,017 | 314 | 33
Interest expense | (12,350) | (9,800) | (2,628)
Loss on extinguishment of debt | 0 | (755) | 0
Income (loss) before income taxes and noncontrolling interests in earnings | 31,278 | 15,935 | (7,324)
Income tax expense | (1,738) | (118) | (88)
Net income (loss) | 29,540 | 15,817 | (7,412)
Noncontrolling interests in earnings | (4,353) | (4,200) | (1,826)
Net income (loss) attributable to Sterling common stockholders | $ 25,187 | $ 11,617 | $ (9,238)
Net income (loss) per share attributable to Sterling common stockholders: |  |  |
Basic (in dollars per share) | $ 0.94 | $ 0.44 | $ (0.40)
Diluted (in dollars per share) | $ 0.93 | $ 0.43 | $ (0.40)
Weighted average number of common shares outstanding used in computing per share amounts: |  |  |
Basic (in shares) | 26,903 | 26,274 | 23,140
Diluted (in shares) | 27,194 | 26,712 | 23,140

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