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Share-Based Compensation Plans | 9 Months Ended
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Sep. 30, 2023
Share-Based Compensation Plans |
Share-Based Compensation Plans | 10. Share-Based Compensation Plans During the three and nine months ended September 30, 2023, we recognized $321,000 and $996,000, respectively, of compensation expense associated with stock option and restricted stock awards granted in years 2018 through 2023. During the three and nine months ended September 30, 2022, we recognized $339,000 and $1,157,000, respectively, of compensation expense associated with stock option and restricted stock awards granted in years 2017 through 2022. The following table summarizes our stock option activity for the nine-month period ended September 30, 2023: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | 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 |  | 149,200 | ​ | $ | 25.79 |  |  |  | ​ |
Exercised |  | (404,564) | ​ | $ | 25.36 |  |  |  | ​ |
Forfeited or expired |  | (31,890) | ​ | $ | 25.59 |  |  |  | ​ |
Outstanding at September 30, 2023 |  | 1,058,115 | ​ | $ | 26.02 |  | 6.9 | ​ | $ | 1,682,000
Exercisable at September 30, 2023 |  | 609,387 | ​ | $ | 26.82 |  | 5.7 | ​ | $ | 1,041,000
​ *The aggregate intrinsic value of outstanding and exercisable stock options is defined as the difference between the market value of our common stock on September 29, 2023 of $25.35 and the exercise price multiplied by the number of in-the-money outstanding and exercisable stock options. The following table summarizes our restricted stock award activity for the nine-month period ended September 30, 2023: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | 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 |  | 27,700 | ​ | ​ | 25.79 |  |  |  | ​ |
Vested |  | (28,243) | ​ |  | 25.65 |  |  |  | ​ |
Forfeited |  | (2,175) | ​ |  | 25.13 |  |  |  | ​ |
Non-vested at September 30, 2023 |  | 69,090 | ​ | $ | 25.54 |  | 2.9 | ​ | $ | 1,751,000
​ *The aggregate intrinsic value of non-vested restricted stock was calculated using the market value of our common stock on September 29, 2023 of $25.35 multiplied by the number of non-vested restricted shares outstanding.

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