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Earnings Per Share | 6 Months Ended
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Jun. 30, 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):
| Three Months Ended June 30, |  | Six Months Ended June 30,
| 2016 |  | 2015 |  | 2016 |  | 2015
Numerator: |  |  |  |  |  |  |
Net income | $ | 44,175 |  |  | $ | 24,822 |  |  | $ | 60,953 |  |  | $ | 35,464 |
Denominator: |  |  |  |  |  |  |
Weighted-average number of common shares outstanding—basic | 201,273,767 |  |  | 200,830,064 |  |  | 201,133,321 |  |  | 200,738,301 |
Effect of dilutive securities: |  |  |  |  |  |  |
Unvested restricted common stock | — |  |  | 80,538 |  |  | 81,513 |  |  | 143,882 |
Unexercised stock appreciation rights | — |  |  | 1,425 |  |  | — |  |  | 2,212 |
Shares related to unvested PSUs | 553,617 |  |  | 230,720 |  |  | 553,617 |  |  | 230,720 |
Weighted-average number of common shares outstanding—diluted | 201,827,384 |  |  | 201,142,747 |  |  | 201,768,451 |  |  | 201,115,115 |
Earnings per share: |  |  |  |  |  |  |  |  |  |
Basic earnings per share | $ | 0.22 |  |  | $ | 0.12 |  |  | $ | 0.30 |  |  | $ | 0.18 |
Diluted earnings per share | $ | 0.22 |  |  | $ | 0.12 |  |  | $ | 0.30 |  |  | $ | 0.18 |
We did not include unexercised stock appreciation rights of 20,770 for the three and six months ended June 30, 2016 as they would be anti-dilutive. We did not include the effect of unvested restricted common stock in the calculation of the diluted weighted-average number of common shares outstanding for the three months ended June 30, 2016 as it would be 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 -SubTopic 10 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1278-109256 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=64863997&loc=d3e1252-109256 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 55 -Paragraph 52 -URI http://asc.fasb.org/extlink&oid=65016374&loc=d3e4984-109258 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 225 -SubTopic 10 -Section S99 -Paragraph 2 -Subparagraph (SX 210.5-03.21) -URI http://asc.fasb.org/extlink&oid=63488584&loc=d3e20235-122688 + Details
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