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Share-Based Compensation Plans (Tables) | 12 Months Ended
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Dec. 31, 2025
Assumptions Used to Determine Grant-Date Fair Value of Options | The fair value of each stock option or SEU granted in the year was calculated with the following weighted average assumptions to determine the grant-date fair values of the share-based compensation:
|  | 2025 |  |  | 2024 |  |  | 2023 |
Dividend yield |  |  | 1.51 | % |  |  | 1.13 | % |  |  | 1.16 | %
Expected life |  | 3 years |  |  | 3 years |  |  | 4 years |
Volatility |  |  | 27.0 | % |  |  | 25.5 | % |  |  | 39.7 | %
Risk free interest rate |  |  | 4.16 | % |  |  | 4.38 | % |  |  | 4.47 | %
Employee Stock Option |
Summary of Transactions of Company's Stock Option Plans | The following tables summarizes the transactions of the Company’s share-based compensation plans for the year ended December 31, 2025.
|  | Number of shares |  |  | Weighted Average Grant-Date Fair Value |
Nonvested at December 31, 2024 |  |  | 574,671 |  |  | $ | 86.2 |
Granted |  |  | 166,337 |  |  | $ | 107.1 |
Vested |  |  | (210,227 | ) |  | $ | 77.8 |
Forfeited |  |  | (11,831 | ) |  | $ | 72.5 |
Cancelled |  |  | (87,653 | ) |  | $ | 31.3 |
Nonvested at December 31, 2025 |  |  | 431,297 |  |  | $ | 109.5 |
|  | Number of shares |  |  | Weighted Average Exercise price |  |  | Weighted-Average Remaining Contractual Term (years) |
Outstanding at December 31, 2024 |  |  | 619,705 |  |  | $ | 23.5 |  |  |  |
Granted |  |  | 166,337 |  |  | $ | — |  |  |  |
Exercised |  |  | (139,904 | ) |  | $ | 3.5 |  |  |  |
Forfeited |  |  | (17,281 | ) |  | $ | 34.0 |  |  |  |
Cancelled |  |  | (87,653 | ) |  | $ | 75.7 |  |  |  |
Outstanding at December 31, 2025 |  |  | 541,204 |  |  | $ | 12.7 |  |  |  | 2.1 |
Exercisable at December 31, 2025 |  |  | 109,907 |  |  | $ | 49.1 |  |  |  | 2.7 |

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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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- Definition Tabular disclosure of the significant assumptions used during the year to estimate the fair value of stock options, including, but not limited to: (a) expected term of share options and similar instruments, (b) expected volatility of the entity's shares, (c) expected dividends, (d) risk-free rate(s), and (e) discount for post-vesting restrictions. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 718 -SubTopic 10 -Subparagraph (f)(2) -Name Accounting Standards Codification -Paragraph 2 -Section 50 -Publisher FASB -URI https://asc.fasb.org/1943274/2147480429/718-10-50-2 + Details
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