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Net Income Per Share (Tables) | 6 Months Ended
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Jun. 30, 2015
Earnings Per Share [Abstract] |
Schedule of Weighted Average Shares Outstanding Basic and Diluted | The share effect is as follows:
| For the Three Months Ended June 30, |  | For the Six Months Ended June 30,
| 2015 |  | 2014 |  | 2015 |  | 2014
Weighted average shares outstanding: |  |  |  |  |  |  |
Common shares | 20,414,667 |  |  | 22,167,771 |  |  | 20,412,511 |  |  | 22,356,299 |
Vested restricted stock units | 532,160 |  |  | 485,622 |  |  | 522,279 |  |  | 765,989 |
Basic number of weighted average shares outstanding | 20,946,827 |  |  | 22,653,393 |  |  | 20,934,790 |  |  | 23,122,288 |
Dilutive effect of stock options | — |  |  | — |  |  | — |  |  | 6,646 |
Dilutive effect of restricted stock and restricted stock units | 5,005 |  |  | 5,498 |  |  | 14,258 |  |  | 28,355 |
Dilutive number of weighted average shares outstanding | 20,951,832 |  |  | 22,658,891 |  |  | 20,949,048 |  |  | 23,157,289 |

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- Definition Tabular disclosure of the weighted average number of shares used in calculating basic net earnings per share (or unit) and diluted earnings per share (or unit). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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