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Common Stock and Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2020
Common Stock and Earnings Per Share [Abstract] |
Shares Used in Computing Basic and Diluted Earnings per Share | The following table summarizes the shares used in computing basic and diluted earnings per share:
| Three Months Ended September 30 |  | Nine Months Ended September 30 |
| 2020 |  | 2019 |  | 2020 |  | 2019 |
Weighted average common shares, basic |  |  | 13,032,389 |  |  |  | 12,968,540 |  |  |  | 13,021,398 |  |  |  | 12,955,602 |
Effect of dilutive securities: |  |  |  |  |  |  |  |  |  |  |  |  |  |  |  |
Employee stock-based compensation |  |  | 1,164 |  |  |  | 2,131 |  |  |  | 565 |  |  |  | 1,506 |
Weighted average common shares, diluted |  |  | 13,033,553 |  |  |  | 12,970,671 |  |  |  | 13,021,963 |  |  |  | 12,957,108 |

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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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