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Earnings Per Share (Notes) | 6 Months Ended
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Jun. 30, 2016
Earnings Per Share [Abstract] |
Earnings Per Share [Text Block] | Earnings Per Share Basic and diluted earnings per share are computed by dividing Net income attributable to common stockholders by the weighted-average common shares outstanding in the period. Diluted earnings per share is computed by giving effect to all potentially dilutive securities that are outstanding.
| Three Months Ended |  | Six Months Ended
| June 30, 2016 |  | June 30, 2015 |  | June 30, 2016 |  | June 30, 2015
Net income attributable to common stockholders – basic | $ | 2,866 |  |  | $ | 1,117 |  |  | $ | 4,819 |  |  | $ | 2,062 |
Less: earnings adjustment for dilutive stock compensation rights | (1 | ) |  | (4 | ) |  | (2 | ) |  | (1 | )
Net income attributable to common stockholders – diluted | $ | 2,865 |  |  | $ | 1,113 |  |  | $ | 4,817 |  |  | $ | 2,061 |
Weighted-average common shares outstanding – basic | 1,548 |  |  | 1,596 |  |  | 1,547 |  |  | 1,606 |
Dilutive effect of warrants and awards under stock incentive plans | 33 |  |  | 64 |  |  | 33 |  |  | 67 |
Weighted-average common shares outstanding – diluted | 1,581 |  |  | 1,660 |  |  | 1,580 |  |  | 1,673 |
Diluted earnings per common share | $ | 1.81 |  |  | $ | 0.67 |  |  | $ | 3.05 |  |  | $ | 1.23 |
In the three and six months ended June 30, 2016 stock options to purchase 26 million shares were not included in the computation of diluted earnings per share because the stock options would have had an antidilutive effect. In the three and six months ended June 30, 2015 warrants to purchase 46 million shares were not included in the computation of diluted earnings per share because the warrants would have had an antidilutive effect. The warrants expired December 31, 2015.

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