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6) Earnings Per Share (Tables) | 9 Months Ended
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Sep. 30, 2020
Table Text Block Supplement [Abstract] |
Schedule of Earnings Per Share, Basic and Diluted | The basic and diluted earnings per share amounts were calculated as follows:
|  |  | Three Months Ended September 30 |  | Nine Months Ended September 30
|  |  | 2020 |  | 2019 |  | 2020 |  | 2019
Numerator: |  |  |  |  |  |  |  |
| Net earnings |  | $ 29,304,769 |  | $ 3,617,414 |  | $ 51,286,265 |  | $ 9,027,786
Denominator: |  |  |  |  |  |  |  |
| Basic weighted-average shares outstanding |  | 18,873,886 |  | 18,551,116 |  | 18,760,884 |  | 18,560,874
Effect of dilutive securities: |  |  |  |  |  |  |  |
| Employee stock options |  | 559,733 |  | 203,975 |  | 404,006 |  | 208,561
| Diluted weighted-average shares outstanding |  | 19,433,619 |  | 18,755,091 |  | 19,164,890 |  | 18,769,435
Basic net earnings per share |  | $1.55 |  | $0.19 |  | $2.73 |  | $0.49
Diluted net earnings per share |  | $1.51 |  | $0.19 |  | $2.68 |  | $0.48

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- Definition Tabular disclosure of an entity's basic and diluted earnings per share calculations, including a reconciliation of numerators and denominators of the basic and diluted per-share computations for income from continuing operations. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Publisher FASB -Name Accounting Standards Codification -Topic 260 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=6371337&loc=d3e3550-109257 + Details
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