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Stock-Based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2022
Restricted Stock |
Summary of information about nonvested stock option awards and changes | The following table summarizes activity under our restricted stock plans (shares in thousands):
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | Year Ended | ​
​ | ​ | December 31, 2022 | ​
​ | ​ | ​ | ​ | Weighted | ​
​ | ​ | ​ | ​ | Average Grant | ​
Restricted Stock and Restricted Stock Units |  | Shares |  | Date Fair Value |
Unvested at beginning of year |  | 115 | ​ | $ | 57.74 | ​
Granted |  | 69 | ​ | $ | 90.17 | ​
Vested |  | (75) | ​ | $ | 61.68 | ​
Forfeited |  | (5) | ​ | $ | 56.77 | ​
Unvested at end of year |  | 104 | ​ | $ | 76.39 | ​
​

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- Definition Tabular disclosure of the changes in outstanding nonvested shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2) -URI https://asc.fasb.org/extlink&oid=128089324&loc=d3e5070-113901 + Details
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