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EARNINGS PER SHARE (Tables) | 9 Months Ended
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Sep. 30, 2020
EARNINGS PER SHARE |
Schedule of reconciliation of the number of shares (denominator) used in the basic and diluted earnings per share computations | The following is a reconciliation of the number of shares (denominator) used in the basic and diluted earnings per share computations (shares in thousands): ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Three months ended September 30, | ​
​ | ​ | 2020 | ​ | 2019 | ​
​ | ​ | ​ | ​ | Per Share | ​ | ​ | ​ | Per Share | ​
​ |  | Shares |  | Amount |  | Shares |  | Amount | ​
Basic |  | 18,218 |  | $ | 0.59 |  | 18,056 |  | $ | 0.52 | ​
Effect of dilutive stock options |  | 643 | ​ |  | (0.02) |  | 653 | ​ |  | (0.02) | ​
Diluted |  | 18,861 |  | $ | 0.57 |  | 18,709 |  | $ | 0.50 | ​
​ ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Nine months ended September 30, | ​
​ | ​ | 2020 | ​ | 2019 | ​
​ | ​ | ​ | ​ | Per Share | ​ | ​ | ​ | Per Share | ​
​ |  | Shares |  | Amount |  | Shares |  | Amount | ​
Basic |  | 18,186 |  | $ | 0.46 |  | 17,997 |  | $ | 1.42 | ​
Effect of dilutive stock options |  | 637 | ​ |  | (0.02) |  | 668 | ​ |  | (0.05) | ​
Diluted |  | 18,823 |  | $ | 0.44 |  | 18,665 |  | $ | 1.37 | ​

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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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