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Share-Based Compensation Plans (Tables) | 6 Months Ended
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Jun. 30, 2023
Share-Based Compensation Plans |
Schedule of company's stock option activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted | ​ | Average | ​ | ​ | ​
​ | ​ | ​ | ​ | Average | ​ | Remaining | ​ | Aggregate
​ | ​ | ​ | ​ | Exercise | ​ | Contractual | ​ | Intrinsic
​ |  | Shares |  | Price |  | Term (Years) |  | Value*
Outstanding at December 31, 2022 |  | 1,345,369 | ​ | $ | 25.83 |  |  |  | ​ |
Granted |  | — | ​ | $ | — |  |  |  | ​ |
Exercised |  | (333,009) | ​ | $ | 25.40 |  |  |  | ​ |
Forfeited or expired |  | (3,720) | ​ | $ | 27.50 |  |  |  | ​ |
Outstanding at June 30, 2023 |  | 1,008,640 | ​ | $ | 25.97 |  | 6.1 | ​ | $ | 2,484,000
Exercisable at June 30, 2023 |  | 558,104 | ​ | $ | 26.92 |  | 4.7 | ​ | $ | 1,106,000
​ *The aggregate intrinsic value of outstanding and exercisable stock options is defined as the difference between the market value of our common stock on June 30, 2023 of $26.69 and the exercise price multiplied by the number of in-the-money outstanding and exercisable stock options.
Schedule of company's restricted stock award |
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted | ​ | Average | ​ | ​ | ​
​ | ​ | Shares of | ​ | Average | ​ | Remaining | ​ | Aggregate
​ | ​ | Restricted | ​ | Grant Date | ​ | Contractual | ​ | Intrinsic
​ |  | Stock |  | Fair Value |  | Term (Years) |  | Value*
Non-vested at December 31, 2022 |  | 71,808 | ​ | $ | 24.67 |  |  |  | ​ |
Issued |  | — | ​ | ​ | — |  |  |  | ​ |
Vested |  | (150) | ​ |  | 28.77 |  |  |  | ​ |
Forfeited |  | (775) | ​ |  | 26.49 |  |  |  | ​ |
Non-vested at June 30, 2023 |  | 70,883 | ​ | $ | 24.64 |  | 2.2 | ​ | $ | 1,892,000
​ *The aggregate intrinsic value of non-vested restricted stock was calculated using the market value of our common stock on June 30, 2023 of $26.69 multiplied by the number of non-vested restricted shares outstanding.

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- Definition Tabular disclosure for stock option plans. Includes, but is not limited to, outstanding awards at beginning and end of year, grants, exercises, forfeitures, and weighted-average grant date fair value. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1) -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (d) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Paragraph 2 -Subparagraph (e) -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org//1943274/2147480429/718-10-50-2 + Details
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