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Net Income Per Common Share (Tables) | 6 Months Ended
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Jun. 30, 2018
Earnings Per Share [Abstract] |
Schedule of Basic and Diluted Weighted Average Common Shares | Basic and diluted weighted average common shares are as follows (in thousands):
|  | Three Months Ended |  |  | Six Months Ended |
|  | June 30, |  |  | June 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Basic weighted average common shares outstanding |  |  | 17,965 |  |  |  | 17,715 |  |  |  | 18,001 |  |  |  | 17,973 |
Weighted average common equivalent shares |  |  | 325 |  |  |  | 335 |  |  |  | 312 |  |  |  | 320 |
Diluted weighted average common shares outstanding |  |  | 18,290 |  |  |  | 18,050 |  |  |  | 18,313 |  |  |  | 18,293 |
Options excluded from diluted weighted average share calculation as effect would have been anti-dilutive |  |  | 14 |  |  |  | 129 |  |  |  | 14 |  |  |  | 251 |

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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://fasb.org/us-gaap/role/ref/legacyRef -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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