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Stock Based Compensation (Tables) | 9 Months Ended
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Sep. 30, 2025
Share-Based Payment Arrangement [Abstract] |
Summary of Option Activity | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | Weighted | ​ | Aggregate
​ | ​ | ​ | ​ | Weighted | ​ | Average | ​ | Intrinsic
​ | ​ | ​ | ​ | Average | ​ | Remaining | ​ | Value
​ |  | Options |  | Exercise Price |  | Contractual Life |  | (in 000’s)
Outstanding options at January 1, 2025 | ​ | 2,837,938 | ​ | $ | 52.80 | ​ | ​ | ​ | ​ | ​
Options granted | ​ | 280,680 | ​ | ​ | 72.98 | ​ | ​ | ​ | ​ | ​
Options exercised | ​ | (81,518) | ​ | ​ | 29.47 | ​ | ​ | ​ | ​ | ​
Options canceled/forfeited | ​ | (36,150) | ​ | ​ | 64.51 | ​ | ​ | ​ | ​ | ​
Outstanding options at September 30, 2025 | ​ | 3,000,950 | ​ | $ | 55.18 | ​ | 4.13 | ​ | $ | 35,782
Exercisable options at September 30, 2025 | ​ | 1,909,058 | ​ | $ | 48.94 | ​ | 3.05 | ​ | $ | 32,086
Summary of Weighted Average Grant-date Assumptions and Weighted Average Fair Values | ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | 2025 |  | 2024 | ​
Weighted-average fair value of grants | ​ | $ | 15.02 | ​ | $ | 15.65 | ​
Risk-free interest rates | ​ | ​ | 4.10 | % | ​ | 4.92 | %
Dividend yield | ​ | ​ | 2.53 | % | ​ | 2.30 | %
Expected volatility | ​ | ​ | 23.18 | % | ​ | 23.08 | %
Expected option life | ​ | ​ | 5.03 | years | ​ | 5.00 | years
Schedule of Restricted Stock Units Activity | ​
​ | ​ | ​ | ​ | ​ | ​
​ | ​ | ​ | ​ | Weighted
​ | ​ | ​ | ​ | Average
​ | ​ | ​ | ​ | Grant Date
​ |  | RSUs |  | Fair Value
Nonvested at January 1, 2025 | ​ | 99,095 | ​ | $ | 67.54
Granted | ​ | 36,901 | ​ | ​ | 74.40
Reinvested | ​ | 657 | ​ | ​ | 70.61
Vested | ​ | (36,821) | ​ | ​ | 64.77
Forfeited | ​ | (3,406) | ​ | ​ | 67.14
Nonvested at September 30, 2025 | ​ | 96,426 | ​ | $ | 71.10
​

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- Definition Tabular disclosure of the changes in outstanding nonvested restricted stock units. + 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)(2) -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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- 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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