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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2020
Stock-Based Compensation |
Summary of Restricted Stock Transactions | The following summarizes the restricted stock transactions for the nine months ended September 30, 2020: ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted
​ | ​ | ​ | ​ | Average
​ | ​ | ​ | ​ | Grant Date
​ | ​ | ​ | ​ | Fair
​ |  | Shares |  | Value
Outstanding at January 1, 2020 | ​ | 128,224 | ​ | $ | 34.66
Vested | ​ | 5,376 | ​ | ​ | 34.83
Forfeited | ​ | 1,802 | ​ | ​ | 33.67
Non-vested and outstanding at September 30, 2020 |  | 121,046 |  | $ | 34.67

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- Definition Tabular disclosure of the number and weighted-average grant date fair value for restricted stock units that were outstanding at the beginning and end of the year, and the number of restricted stock units that were granted, vested, or forfeited during the year. + 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)(1) -URI http://asc.fasb.org/extlink&oid=116856206&loc=d3e5070-113901 + Details
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