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Equity - Incentive Equity Awards - Additional Information (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Stockholders Equity Note [Line Items] |  |  |
Stock options, outstanding | 16,664,000 | 15,619,000 |
Shares issued, exercise of stock options | 1,623,000 |  |
Proceeds from exercise of stock options, net of transaction costs | $ 5,158 | $ 24,478 | $ 26,402
Stock Incentive Plan 2020 and 2011 |  |  |
Stockholders Equity Note [Line Items] |  |  |
Stock options, outstanding | 16,664,260 |  |
Shares issued, exercise of stock options | 1,623,460 | 5,997,919 |
Proceeds from exercise of stock options, net of transaction costs | $ 5,200 | $ 24,500 |
Restricted Stock Units (RSUs) |  |  |
Stockholders Equity Note [Line Items] |  |  |
Stock units, Granted | 3,460,000 |  |
Restricted Stock Units (RSUs) | Stock Incentive Plan 2020 and 2011 |  |  |
Stockholders Equity Note [Line Items] |  |  |
Restricted stock units, outstanding | 7,710,388 |  |
Percentage of outstanding shares on a fully diluted basis | 2.00% |  |
Shares issued, related to the vesting of RSUs | 2,507,748 | 3,969,811 |
Treasury shares for settlement of employee tax obligations | 975,927 | 1,650,142 |
Stock units, Granted | 164,657 | 45,163 |
Stock units, Vesting Period | 3 years |  |
Restricted Stock Units (RSUs) | Stock Incentive Plan 2020 and 2011 | Employees |  |  |
Stockholders Equity Note [Line Items] |  |  |
Stock units, Granted | 1,811,470 | 782,802 |
Stock units, Vesting Period | 3 years |  |
Stock Options |  |  |
Stockholders Equity Note [Line Items] |  |  |
Stock units, Vesting Period | 4 years |  |
Stock Options | Stock Incentive Plan 2020 and 2011 |  |  |
Stockholders Equity Note [Line Items] |  |  |
Percentage of outstanding shares on a fully diluted basis | 4.00% |  |
Stock options, additional granted | 210,764 | 58,721 |
Stock Options | Stock Incentive Plan 2020 and 2011 | Employees |  |  |
Stockholders Equity Note [Line Items] |  |  |
Stock options, Granted | 2,890,450 | 2,589,400 |
Stock units, Vesting Period | 4 years |  |
Performance-Based RSUs | Stock Incentive Plan 2020 and 2011 |  |  |
Stockholders Equity Note [Line Items] |  |  |
Shares issued, related to the vesting of RSUs | 1,240,584 |  |
Treasury shares for settlement of employee tax obligations | 514,784 |  |
Performance-Based RSUs | Stock Incentive Plan 2020 and 2011 | Employees |  |  |
Stockholders Equity Note [Line Items] |  |  |
Stock units, Granted | 1,483,400 | 645,000 |

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