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Share-Based Compensation - Narrative (Details) $ / shares in Units, $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2024 USD ($) d $ / shares shares | Dec. 31, 2023 USD ($) $ / shares shares | Dec. 31, 2022 USD ($) $ / shares shares | Dec. 31, 2021 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Number of options outstanding (in shares) | 435,135 | 435,135 | 435,135 | 440,574
Options exercisable (in shares) | 326,351 | 271,959 | 217,567 |
Options exercisable (in dollars per share) | $ / shares | $ 68.97 | $ 68.97 | $ 68.97 |
Exercise of stock options (in shares) | 0 | 0 | 5,439 |
Total intrinsic values of options exercised in period | $ |  |  | $ 400 |
Total fair value of options vested | $ | $ 1,000 | $ 1,000 | 1,100 |
Proceeds from exercise of stock options | $ | 0 | 0 | 148 |
Tax benefit realized for the tax deductions from option exercises | $ |  |  | 300 |
Issuance of common stock under employee stock purchase plan | $ | $ 8,371 | $ 8,727 | $ 9,431 |
Restricted Stock Units (RSUs) |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation arrangement by share-based payment award, non-option equity instruments, outstanding, number | 652,227 | 506,425 | 343,955 | 299,023
Unrecognized compensation expense, period for recognition | 2 years |  |  |
Restricted stock and restricted units granted (in shares) | 413,053 | 305,549 | 154,022 |
Aggregate intrinsic value, outstanding | $ | $ 33,200 |  |  |
Share-based Payment Arrangement, Option |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Expiration period | 10 years |  |  |
Unrecognized compensation expense | $ | $ 1,000 |  |  |
Unrecognized compensation expense, period for recognition | 1 year 1 month 6 days |  |  |
Expected term (in years) | 6 months | 6 months | 6 months |
Restricted Stock and Restricted Stock Unit |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Restricted stock and restricted units granted (in shares) | 413,053 | 305,549 | 154,022 |
Restricted Stock and Restricted Stock Unit | Board of Directors |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Award vesting periods | 1 year |  |  |
Restricted Stock and Restricted Stock Unit | Chief Executive Officer |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Award vesting periods | 8 years |  |  |
Market-based Restricted Stock Awards |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Restricted stock and restricted units granted (in shares) | 0 | 0 | 0 |
Weighted-average grant-date fair values of restricted stock awards granted (in dollars per share) | $ / shares | $ 87.17 | $ 70.06 | $ 87.11 |
Aggregate intrinsic value, nonvested | $ | $ 28,300 |  |  |
Restricted Stock and Restricted Stock Unit, Market-based Restricted Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Tax benefit realized for the tax deductions from option exercises | $ | 2,300 | $ 1,900 | $ 2,800 |
Unrecognized compensation expense | $ | 50,800 |  |  |
Total fair value of restricted stock and restricted stock units vested | $ | $ 15,900 | $ 11,300 | $ 12,400 |
Market-based Restricted Stock Units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation arrangement by share-based payment award, non-option equity instruments, outstanding, number | 520,986 | 270,772 | 120,399 | 60,891
Lookback period | d | 30 |  |  |
Restricted stock and restricted units granted (in shares) | 308,970 | 167,606 | 100,193 |
Aggregate intrinsic value, outstanding | $ | $ 27,100 |  |  |
Share-based Payment Arrangement, Measurement Input, Trading Days | d | 20 |  |  |
Restricted Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Unrecognized compensation expense, period for recognition | 1 year 1 month 6 days |  |  |
Restricted stock and restricted units granted (in shares) | 0 | 0 | 0 |
Aggregate intrinsic value, nonvested | $ | $ 35,400 |  |  |
Minimum | Share-based Payment Arrangement, Option |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Award vesting periods | 5 years |  |  |
Minimum | Restricted Stock and Restricted Stock Unit | Senior Staff |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Award vesting periods | 3 years |  |  |
Minimum | Market-based Restricted Stock Units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Weighted-average grant-date fair values of restricted stock awards granted (in dollars per share) | $ / shares |  |  | $ 83.61 |
Award vesting rights, percentage | 0.00% |  |  |
Maximum | Share-based Payment Arrangement, Option |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Award vesting periods | 8 years |  |  |
Maximum | Restricted Stock and Restricted Stock Unit | Senior Staff |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Award vesting periods | 4 years |  |  |
Maximum | Market-based Restricted Stock Units |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Weighted-average grant-date fair values of restricted stock awards granted (in dollars per share) | $ / shares |  |  | $ 103.76 |
Award vesting rights, percentage | 200.00% |  |  |
2015 Stock Option Plan | Restricted Stock Units (RSUs) |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Share-based compensation arrangement by share-based payment award, non-option equity instruments, outstanding, number | 1,173,213 |  |  |
Employee Stock Purchase Plan | Common stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Maximum issuance of common stock (in shares) | 2,000,000 |  |  |
Additional shares available for grant (in shares) | 819,505 |  |  |
Maximum employee subscription rate | 15.00% |  |  |
Expected term (in years) | 6 months |  |  |
Market value of common stock on the date of grant for incentive stock options | 85.00% |  |  |
Issuance of shares under employee stock purchase plan (in shares) | 174,706 | 74,390 | 139,992 |
Estimated forfeiture rates | 12.10% | 12.50% | 11.80% |
Employee Stock Purchase Plan | Minimum | Employee Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Purchase price under the Purchase Plan (in usd per share) | $ / shares | $ 46.84 |  |  |
Employee Stock Purchase Plan | Maximum | Employee Stock |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Purchase price under the Purchase Plan (in usd per share) | $ / shares | $ 48.88 |  |  |
2024 Stock Option Plan |  |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |  |
Maximum issuance of common stock (in shares) | 3,500,000 |  |  |
Additional shares available for grant (in shares) | 3,617,530 |  |  |

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