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Earnings Per Share | 3 Months Ended
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Mar. 31, 2017
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share
| Three Months Ended
| March 31, 2017 |  | March 31, 2016
Net income attributable to common stockholders – diluted | $ | 2,608 |  |  | $ | 1,952 |
Weighted-average common shares outstanding | 1,505 |  |  | 1,546 |
Dilutive effect of warrants and awards under stock incentive plans | 27 |  |  | 34 |
Weighted-average common shares outstanding – diluted | 1,532 |  |  | 1,580 |
Diluted earnings per common share | $ | 1.70 |  |  | $ | 1.24 |
Potentially dilutive securities(a) | — |  |  | 26 |
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(a) | Potentially dilutive securities attributable to outstanding stock options were excluded from the computation of diluted earnings per share because the securities would have had an antidilutive effect.

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