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Share-based Compensation (Tables) | 12 Months Ended
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Dec. 31, 2022
Disclosure Of Compensation Related Costs Sharebased Payments [Abstract] |
Summary of Stock Option Activity | The following table summarizes the Company’s stock option activity (in thousands, except per share data and years) for the periods indicated:
|  | Stock Options Outstanding
|  |  |  |  |  | Weighted Average |  |  | Aggregate |  |  | Weighted Average
|  |  |  |  |  | Exercise Price |  |  | Intrinsic |  |  | Remaining Contractual
|  | Shares |  |  | Per Share |  |  | Value |  |  | Term (Years)
Balance as of January 1, 2020 |  |  | 1,634 |  |  | $ | 141.60 |  |  |  |  |  |  |
Granted |  |  | 118 |  |  |  | 146.76 |  |  |  |  |  |  |
Exercised |  |  | (348 | ) |  |  | 146.80 |  |  | $ | 29,994 |  |  |
Forfeited/Expired |  |  | (247 | ) |  |  | 146.63 |  |  |  |  |  |  |
Balance as of December 31, 2020 |  |  | 1,157 |  |  |  | 139.48 |  |  |  |  |  |  |
Granted |  |  | 305 |  |  |  | 676.10 |  |  |  |  |  |  |
Exercised |  |  | (269 | ) |  |  | 151.19 |  |  | $ | 163,427 |  |  |
Forfeited/Expired |  |  | (26 | ) |  |  | 499.11 |  |  |  |  |  |  |
Balance as of December 31, 2021 |  |  | 1,167 |  |  |  | 268.74 |  |  |  |  |  |  |
Granted |  |  | 440 |  |  |  | 346.15 |  |  |  |  |  |  |
Exercised |  |  | (9 | ) |  |  | 137.51 |  |  | $ | 1,469 |  |  |
Forfeited/Expired |  |  | (21 | ) |  |  | 498.69 |  |  |  |  |  |  |
Balance as of December 31, 2022 |  |  | 1,577 |  |  | $ | 288.30 |  |  |  |  |  |  |
Exercisable as of December 31, 2022 |  |  | 807 |  |  | $ | 180.26 |  |  | $ | 9,755 |  |  | 3.7
Expected to vest as of December 31, 2022 |  |  | 770 |  |  | $ | 401.45 |  |  |  | 326 |  |  | 8.7
Total |  |  | 1,577 |  |  | $ | 288.30 |  |  | $ | 10,081 |  |  | 6.1
Schedule of Range of Exercise Prices per Share | Stock options outstanding as of December 31, 2022 are comprised of the following range of exercise prices per share (in thousands, except per share data and years):
|  | Stock Options Outstanding at December 31, 2022 |
|  |  |  |  |  | Weighted Average |  |  | Weighted Average |
|  |  |  |  |  | Exercise Price |  |  | Remaining Contractual |
Range of Exercise Prices per Share |  | Shares |  |  | Per Share |  |  | Term (Years) |
$121.43 - $200.00 |  |  | 919 |  |  | $ | 138.56 |  |  |  | 4.2 |
$200.01 - $300.00 |  |  | 80 |  |  | $ | 239.61 |  |  |  | 9.6 |
$400.01 - $500.00 |  |  | 323 |  |  | $ | 408.66 |  |  |  | 9.1 |
$600.01 - $691.23 |  |  | 255 |  |  | $ | 691.23 |  |  |  | 8.1 |
Total |  |  | 1,577 |  |  | $ | 288.30 |  |  |  | 6.1 |
Assumptions Used in Black-Scholes Pricing Model | The weighted average grant date fair value of stock option awards using the Black-Scholes valuation model was $201.64, $372.05, and $49.68 for each share subject to a stock option granted during the years ended December 31, 2022, 2021, and 2020, respectively, based on the following assumptions:
|  | Years Ended December 31,
|  | 2022 |  | 2021 |  | 2020
Expected term of options in years |  | 6.3 |  | 6.3 |  | 6.3
Expected volatility |  | 58.4% - 75.5% |  | 56.8% - 59.0% |  | 33.6% - 34.6%
Risk-free interest rate |  | 1.9% - 3.9% |  | 0.8% - 1.1% |  | 0.3% - 0.5%
Expected dividend yield |  | 0.0% |  | 0.0% |  | 0.0%
Summary of Share-Settled Restricted Stock Unit Activity | The following table summarizes the Company’s share-settled restricted stock unit activity (in thousands) for the periods indicated:
|  | Share-Settled Restricted Stock Units Outstanding |
|  |  |  |  |  | Aggregate |
|  |  |  |  |  | Intrinsic |
|  | Units |  |  | Value |
Balance as of January 1, 2020 |  |  | 0 |  |  |  |  |
Granted |  |  | 76 |  |  |  |  |
Vested |  |  | 0 |  |  | $ | 0 |
Forfeited |  |  | (2 | ) |  |  |  |
Balance as of January 1, 2021 |  |  | 74 |  |  |  |  |
Granted |  |  | 58 |  |  |  |  |
Vested |  |  | (17 | ) |  | $ | 13,803 |
Forfeited |  |  | (10 | ) |  |  |  |
Balance as of December 31, 2021 |  |  | 105 |  |  |  |  |
Granted |  |  | 60 |  |  |  |  |
Vested |  |  | (28 | ) |  | $ | 6,604 |
Forfeited |  |  | (17 | ) |  |  |  |
Balance as of December 31, 2022 |  |  | 120 |  |  |  |  |
Expected to vest as of December 31, 2022 |  |  | 120 |  |  | $ | 16,934 |
Summary of Components of Tax (benefit) Expense Related To Equity Plan | The following table summarizes the tax (benefit) expense related to the Company’s equity plans (in thousands) for the periods indicated:
|  | Years Ended December 31, |
|  | 2022 |  |  | 2021 |  |  | 2020 |
Tax (benefit) expense related to: |  |  |  |  |  |  |  |  |  |  |  |
Share-based compensation expense |  | $ | (12,155 | ) |  | $ | (8,260 | ) |  | $ | (2,028 | )
Exercises of stock options and vesting of share-settled restricted stock units |  |  | 1,370 |  |  |  | (37,664 | ) |  |  | (3,196 | )
Total tax benefit related to the Company's equity plans |  | $ | (10,785 | ) |  | $ | (45,924 | ) |  | $ | (5,224 | )

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