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Stock-Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2024
Share-Based Payment Arrangement [Abstract] |
Summary of Stock Option Activity | A summary of stock option activity under the 2018 Plan and 2006 Plan during the nine months ended September 30, 2024:
Options |  | Number of Shares |  | Weighted- Average Exercise Price |  | Weighted- Average Remaining Contractual Term (Years) |  | Aggregate Intrinsic Value
|  | (dollars in thousands, except per share amounts; unaudited)
Outstanding at December 31, 2023 |  | 354,969 |  | $ | 9.11 |  |  | 3.3 |  | $ | 12,531 |
Granted |  | — |  | — |  |  |  |  |
Exercised |  | (155,439) |  | 8.18 |  |  |  |  | $ | 7,120 |
Expired |  | (20) |  | 14.91 |  |  |  |  |
Forfeited |  | (1,140) |  | 9.67 |  |  |  |  |
Outstanding at September 30, 2024 |  | 198,370 |  | $ | 9.83 |  |  | 3.1 |  | $ | 8,760 |
Vested or expected to vest at September 30, 2024 |  | 198,370 |  | $ | 9.83 |  |  | 3.1 |  | $ | 8,760 |
Exercisable at September 30, 2024 |  | 80,921 |  | $ | 9.74 |  |  | 2.9 |  | $ | 3,580 |
Summary of Nonvested RSUs | A summary of the Company’s nonvested RSUs at September 30, 2024 and changes during the nine month period is presented below:
Nonvested shares - RSUs |  | Number of Shares |  | Weighted- Average Grant Date Fair Value
|  | (dollars in thousands, except per share amounts; unaudited)
Nonvested shares at December 31, 2023 |  | 409,271 |  | $ | 31.22 |
Granted |  | 183,580 |  | $ | 38.08 |
Forfeited or expired |  | (15,242) |  | $ | 36.21 |
Vested |  | (66,806) |  | $ | 33.61 |
Nonvested shares at September 30, 2024 |  | 510,803 |  | $ | 33.22 |
A summary of the Company’s nonvested shares at September 30, 2024 and changes during the nine-month period is presented below:
Nonvested shares - RSAs |  | Number of Shares |  | Weighted- Average Grant Date Fair Value
|  | (dollars in thousands, except per share amounts; unaudited)
Nonvested shares at December 31, 2023 |  | 16,038 |  | $ | 32.41 |
Granted |  | 16,698 |  | $ | 43.66 |
Forfeited |  | — |  | $ | — |
Vested |  | (14,038) |  | $ | 34.49 |
Nonvested shares at September 30, 2024 |  | 18,698 |  | $ | 40.90 |

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock shares. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Name Accounting Standards Codification -Section 50 -Subparagraph (c) -Paragraph 2 -SubTopic 10 -Topic 718 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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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 -Topic 718 -SubTopic 10 -Name Accounting Standards Codification -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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