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Earnings per share ("EPS") (Tables) | 9 Months Ended
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Sep. 30, 2020
Earnings Per Share [Abstract] |
Schedule of Reconciliation of Weighted Average Shares Used in 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, |
|  | 2020 |  |  | 2019 |  |  | 2020 |  |  | 2019 |
Weighted average common shares-basic |  |  | 19,335,718 |  |  |  | 18,957,876 |  |  |  | 19,217,057 |  |  |  | 18,847,728 |
Effect of dilutive securities |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Unexercised stock options and stock purchase plan |  |  | 10,607 |  |  |  | — |  |  |  | 41,701 |  |  |  | — |
Unvested restricted stock awards and units |  |  | 52,242 |  |  |  | — |  |  |  | 60,544 |  |  |  | — |
Weighted average common shares-diluted |  |  | 19,398,567 |  |  |  | 18,957,876 |  |  |  | 19,319,302 |  |  |  | 18,847,728 |

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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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