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v3.10.0.1

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands | 3 Months Ended | 9 Months Ended
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Sep. 30, 2018 | Sep. 30, 2017
Income Statement [Abstract] |  |  |  |
Revenues | $ 291,266 | $ 304,219 | $ 782,492 | $ 704,047
Cost of revenues | (259,735) | (273,588) | (698,975) | (638,924)
Gross profit | 31,531 | 30,631 | 83,517 | 65,123
General and administrative expenses | (11,707) | (13,129) | (38,356) | (36,545)
Other operating expense, net | (5,452) | (4,863) | (11,960) | (9,371)
Operating income | 14,372 | 12,639 | 33,201 | 19,207
Interest income | 274 | 107 | 604 | 192
Interest expense | (3,067) | (3,576) | (9,265) | (6,672)
Loss on extinguishment of debt | 0 | 0 | 0 | (755)
Income before income taxes and noncontrolling interests in earnings | 11,579 | 9,170 | 24,540 | 11,972
Current income tax expense | (1,413) | (344) | (1,551) | (469)
Net income | 10,166 | 8,826 | 22,989 | 11,503
Noncontrolling interests in earnings | (1,251) | (1,694) | (3,409) | (2,966)
Net income attributable to Sterling common stockholders | $ 8,915 | $ 7,132 | $ 19,580 | $ 8,537
Net income per share attributable to Sterling common stockholders: |  |  |  |
Basic (USD per share) | $ 0.33 | $ 0.27 | $ 0.73 | $ 0.33
Diluted (USD per share) | $ 0.33 | $ 0.26 | $ 0.72 | $ 0.33
Weighted average number of common shares outstanding used in computing per share amounts: |  |  |  |
Basic (in shares) | 26,908 | 26,486 | 26,893 | 25,787
Diluted (in shares) | 27,295 | 26,920 | 27,174 | 26,260

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