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Share-Based Compensation Plans | 9 Months Ended
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Sep. 30, 2024
Share-Based Compensation Plans |
Share-Based Compensation Plans | 10. Share-Based Compensation Plans During the three and nine months ended September 30, 2024, we recognized $388,000 and $1,086,000, respectively, of compensation expense associated with stock option and restricted stock awards granted in years 2019 through 2024. 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. The following table summarizes our stock option activity for the nine-month period ended September 30, 2024: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted | ​ | Average | ​ | ​ | ​
​ | ​ | ​ | ​ | Average | ​ | Remaining | ​ | Aggregate
​ | ​ | ​ | ​ | Exercise | ​ | Contractual | ​ | Intrinsic
​ |  | Shares |  | Price |  | Term (Years) |  | Value*
Outstanding at December 31, 2023 |  | 967,217 | ​ | $ | 26.22 |  |  |  | ​ |
Granted |  | — | ​ | ​ | — |  |  |  | ​ |
Exercised |  | (105,072) | ​ | ​ | 24.64 |  |  |  | ​ |
Forfeited or expired |  | (11,680) | ​ | ​ | 25.76 |  |  |  | ​ |
Outstanding at September 30, 2024 |  | 850,465 | ​ | $ | 26.41 |  | 6.1 | ​ | $ | 6,851,000
Exercisable at September 30, 2024 |  | 567,574 | ​ | $ | 26.88 |  | 5.2 | ​ | $ | 4,426,000
​ *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 30, 2024 of $34.04 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, 2024: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | ​ |  | ​ |  | ​ | ​ |  | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted | ​ | Average | ​ | ​ | ​ | ​
​ | ​ | Shares of | ​ | Average | ​ | Remaining | ​ | ​ | Aggregate | ​
​ | ​ | Restricted | ​ | Grant Date | ​ | Contractual | ​ | ​ | Intrinsic | ​
​ | ​ | Stock | ​ | Fair Value | ​ | Term (Years) | ​ | ​ | Value* | ​
Non-vested - December 31, 2023 |  | 69,090 | ​ | $ | 25.54 | ​ | ​ | ​ | ​ | ​ | ​ | ​
Issued |  | 54,855 | ​ |  | 34.65 | ​ |  | ​ | ​ |  | ​ | ​
Vested |  | (30,255) | ​ |  | 24.86 | ​ |  | ​ | ​ |  | ​ | ​
Forfeited |  | (625) | ​ |  | 27.86 | ​ |  | ​ | ​ |  | ​ | ​
Non-vested - September 30, 2024 |  | 93,065 | ​ | $ | 31.12 | ​ | 3.8 | ​ | ​ | $ | 3,168,000 | ​
​ *The aggregate intrinsic value of non-vested restricted stock was calculated using the market value of our common stock on September 30, 2024 of $34.04 multiplied by the number of non-vested restricted shares outstanding.

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