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Stock Plans (Tables) | 12 Months Ended
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Dec. 31, 2024
Stock Plans |
Share-Based Compensation Activity | A summary of the status of the Company’s restricted stock units as of December 31, 2024 and changes during the year ended December 31, 2024, is presented below:
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted
​ | ​ | ​ | ​ | Average
​ | ​ | ​ | ​ | Grant-Date
Restricted Stock Units |  | Shares |  | Fair Value
Nonvested shares at January 1, 2024 |  | 601,855 | ​ | $ | 77.59
Granted |  | 171,959 | ​ |  | 113.10
Vested |  | (297,490) | ​ |  | 76.18
Canceled |  | (27,859) | ​ |  | 97.13
Nonvested shares at December 31, 2024 |  | 448,465 | ​ |  | 91.04
​

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (c)(2) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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