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SHARE REPURCHASE PROGRAM (Tables) | 3 Months Ended
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Mar. 31, 2021
Share Repurchase Program |
Schedule of shares repurchased | ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | For the Three Months Ended
​ | ​ | March 31,
​ |  | 2021 |  | 2020
Shares repurchased |  | ​ | 1,475 | ​ | ​ | 1,484
Average price per share | ​ | $ | 450.65 | ​ | $ | 386.71
Total investment | ​ | $ | 664,533 | ​ | $ | 574,037

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