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7. Earnings Per Share (Tables) | 6 Months Ended
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Jun. 30, 2021
Earnings Per Share [Abstract] |
Schedule of weighted-average common shares outstanding used to calculate basic and diluted earnings per shares and the anti-dilutive shares | The weighted average number of common shares outstanding used to calculate basic and diluted earnings per share, and the anti-dilutive shares that are excluded from the diluted earnings per share calculation are as follows (in thousands):
| Three Months Ended |  | Six Months Ended
| June 30, |  | June 30,
| 2021 |  | 2020 |  | 2021 |  | 2020
Basic weighted average shares outstanding | 29,764 |  |  | 29,652 |  |  | 29,793 |  |  | 29,759 |
Effect of potentially dilutive stock options and restricted stock awards | 384 |  |  | 406 |  |  | 374 |  |  | 372 |
Diluted weighted average common shares outstanding | 30,148 |  |  | 30,058 |  |  | 30,167 |  |  | 30,131 |
Anti-dilutive shares | 23 |  |  | 3 |  |  | 23 |  |  | 40 |

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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=124432515&loc=d3e3550-109257 + Details
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