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Net Income Per Share Attributable to Sterling Common Stockholders | 6 Months Ended
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Jun. 30, 2018
Earnings Per Share [Abstract] |
Net Income Per Share Attributable to Sterling Common Stockholders |
13. | Net Income Per Share Attributable to Sterling Common Stockholders
The following table reconciles the numerators and denominators of the basic and diluted per common share computations for net income attributable to Sterling common stockholders (amounts in thousands, except per share data):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2018 |  | 2017 |  | 2018 |  | 2017
Numerator: |  |  |  |  |  |  |  |  |  |  |
Net income attributable to Sterling common stockholders | $ | 8,176 |  |  | $ | 3,662 |  |  | $ | 10,663 |  |  | $ | 1,405 |
Weighted average common shares outstanding — basic | 26,887 |  |  | 26,978 |  |  | 26,881 |  |  | 25,972 |
Shares for dilutive unvested stock and warrants | 238 |  |  | 358 |  |  | 281 |  |  | 437 |
Weighted average common shares outstanding and incremental shares assumed repurchased— diluted | 27,125 |  |  | 27,336 |  |  | 27,162 |  |  | 26,409 |
Basic income per share attributable to Sterling common stockholders | $ | 0.30 |  |  | $ | 0.14 |  |  | $ | 0.40 |  |  | $ | 0.05 |
Diluted income per share attributable to Sterling common stockholders | $ | 0.30 |  |  | $ | 0.13 |  |  | $ | 0.39 |  |  | $ | 0.05 |
In accordance with the treasury stock method, for the three and six months ended June 30, 2017, our Warrants were excluded from the diluted weighted average common shares outstanding as the shares were considered anti-dilutive.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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