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Earnings per share ("EPS") | 9 Months Ended
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Sep. 30, 2018
Earnings Per Share [Abstract] |
Earnings per share ("EPS") | 12. Earnings per share (“EPS”) The Company uses the two-class method of computing basic EPS due to the existence of non-vested restricted stock awards with nonforfeitable rights to dividends or dividend equivalents (referred to as participating securities). For the three and nine months ended September 30, 2018 and 2017, no significant adjustments were made to net income for purposes of calculating basic and diluted EPS. The following is a reconciliation of the weighted average shares used in diluted EPS computations.
|  | Three Months Ended September 30, |  |  | Nine Months Ended September 30, |
|  | 2018 |  |  | 2017 |  |  | 2018 |  |  | 2017 |
Weighted average common shares-basic |  |  | 18,562,204 |  |  |  | 18,180,845 |  |  |  | 18,460,848 |  |  |  | 18,071,093 |
Effect of dilutive securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unexercised stock options and stock purchase plan |  |  | — |  |  |  | 249,667 |  |  |  | 312,320 |  |  |  | 164,716 |
Unvested restricted stock awards and units |  |  | — |  |  |  | 142,279 |  |  |  | 91,001 |  |  |  | 158,733 |
Weighted average common shares-diluted |  |  | 18,562,204 |  |  |  | 18,572,791 |  |  |  | 18,864,169 |  |  |  | 18,394,542 |
There were 2,088,843 and 503,757 weighted average outstanding stock options and restricted stock awards and units not included in the diluted EPS computation for the three months ended September 30, 2018 and 2017, respectively, and 359,172 and 534,288 weighted average outstanding stock options and restricted stock awards and units not included in the diluted EPS computation for the nine months ended September 30, 2018 and 2017, respectively, because inclusion of these awards was anti-dilutive, a loss from continuing operations for the three months ended September 30, 2018, or, for performance-based and market-based restricted stock awards and units, all necessary conditions had not been satisfied by the end of the respective period.

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- Definition The entire disclosure for earnings per share. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -URI http://asc.fasb.org/topic&trid=2144383 + Details
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