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Earnings Per Share | 12 Months Ended
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Dec. 31, 2016
Earnings Per Share [Abstract] |
Earnings Per Share | Earnings Per Share Basic earnings per share is calculated by dividing net income available to common stockholders by the weighted-average number of common shares outstanding. Diluted earnings per share is calculated by dividing net income available to common stockholders that has been adjusted for dilutive securities, by the weighted-average number of common shares outstanding including dilutive securities. The following is a reconciliation of the calculation of basic and diluted earnings per share (in thousands, except share and per-share data):
| Years Ended December 31,
| 2016 |  | 2015 |  | 2014
Numerator: |  |  |  |  |
Net income | $ | 114,796 |  |  | $ | 85,630 |  |  | $ | 163,377 |
Denominator: |  |  |  |  |
Weighted-average number of common shares outstanding—basic | 201,079,573 |  |  | 200,796,678 |  |  | 195,943,813 |
Effect of dilutive securities: |  |  |  |  |
Unvested restricted common stock | 47,468 |  |  | 129,640 |  |  | 181,310 |
Shares related to unvested PSUs | 549,217 |  |  | 533,092 |  |  | 556,763 |
Unexercised stock appreciation rights | — |  |  | 524 |  |  | 1,095 |
Weighted-average number of common shares outstanding—diluted | 201,676,258 |  |  | 201,459,934 |  |  | 196,682,981 |
Earnings per share: |  |  |  |  |
Basic earnings per share | $ | 0.57 |  |  | $ | 0.43 |  |  | $ | 0.83 |
Diluted earnings per share | $ | 0.57 |  |  | $ | 0.43 |  |  | $ | 0.83 |
We did not include the unexercised stock appreciation rights of 20,770 for the year ended December 31, 2016 as they would be anti-dilutive.

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