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Earnings Per Share (Tables) | 12 Months Ended
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Dec. 31, 2017
Earnings Per Share [Abstract] |
Schedule of Reconciliation of Numerator and Denominator for Basic and Diluted Earnings Per Share | Set forth below is a reconciliation of the numerator and denominator for basic and diluted earnings per share calculations for the periods indicated:
Year ended December 31, |  | 2017 |  |  | 2016 |  |  | 2015 |
Numerator: |  |  |  |  |  |  |  |  |  |  |  |
Net income |  | $ | 52,142 |  |  | $ | 87,472 |  |  | $ | 62,126 |
Denominator: |  |  |  |  |  |  |  |  |  |  |  |
Weighted average number of common shares outstanding – Basic |  |  | 17,725,494 |  |  |  | 18,931,415 |  |  |  | 18,696,659 |
Dilutive effect of options and restricted stock units outstanding under the Company’s employee compensation plans |  |  | 213,596 |  |  |  | 118,100 |  |  |  | 668,420 |
Weighted average number of common shares outstanding – Diluted |  |  | 17,939,090 |  |  |  | 19,049,515 |  |  |  | 19,365,079 |

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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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