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Net Income Per Share (Tables) | 12 Months Ended
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Dec. 31, 2016
Earnings Per Share [Abstract] |
Summary of the net income allocated to common shares and the basic and diluted shares used in the net income per share computations | The following table summarizes the net income allocated to common shares and the basic and diluted shares used in the net income per share computations:
|  | Year ended December 31,
|  | 2016 |  | 2015 |  | 2014
|  | (in thousands)
Net income |  | $ | 65,991 |  |  | $ | 39,390 |  |  | $ | 28,004 |
Less distributed and undistributed earnings allocated to participating securities |  | (1,496 | ) |  | (981 | ) |  | (2,002 | )
Net income allocated to common shares |  | $ | 64,495 |  |  | $ | 38,409 |  |  | $ | 26,002 |
Weighted average common shares outstanding |  | 20,834 |  |  | 24,308 |  |  | 24,708 |
Incremental shares from assumed conversions of common stock options and LTIP awards |  | 47 |  |  | 7 |  |  | 4 |
Adjusted weighted average common shares outstanding |  | 20,881 |  |  | 24,315 |  |  | 24,712 |
Potentially dilutive securities not included in weighted average share calculation due to anti-dilutive effect |  | — |  |  | — |  |  | 4 |

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + 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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