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Basis of Presentation (Tables) | 6 Months Ended
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Jun. 30, 2017
Accounting Policies [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The following table sets forth the calculations of basic and diluted earnings per share:
|  | Three Months Ended June 30, |  | Six Months Ended June 30,
(in thousands, except per share amounts) |  | 2017 |  | 2016 |  | 2017 |  | 2016
Net income |  | $ | 6,408 |  |  | $ | 7,860 |  |  | $ | 15,096 |  |  | $ | 12,236 |
Less: Undistributed income allocated to participating securities |  | 45 |  |  | 83 |  |  | 140 |  |  | 109 |
Income attributable to common stockholders |  | $ | 6,363 |  |  | $ | 7,777 |  |  | $ | 14,956 |  |  | $ | 12,127 |
Basic weighted-average common shares outstanding |  | 21,866 |  |  | 21,875 |  |  | 21,961 |  |  | 21,895 |
Add: dilutive effect of equity instruments |  | 14 |  |  | 312 |  |  | 20 |  |  | 309 |
Diluted weighted-average shares outstanding |  | 21,880 |  |  | 22,187 |  |  | 21,981 |  |  | 22,204 |
Earnings per share - basic |  | $ | 0.29 |  |  | $ | 0.36 |  |  | $ | 0.68 |  |  | $ | 0.55 |
Earnings per share - diluted |  | $ | 0.29 |  |  | $ | 0.35 |  |  | $ | 0.68 |  |  | $ | 0.55 |

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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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