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Equity-Based Compensation - Additional Information (Detail) - USD ($) | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Authorized common stock | 8,200,000 |  |
Equity incentive plan available for future grant | 2,903,059 |  |
Annual increments in employee grants | 25.00% |  |
Stock options, contractual term | 10 years |  |
Equity-based compensation expense | $ 17,307,000 | $ 22,001,000 | $ 23,467,000
Vesting targets | (6,400,000) | (5,500,000) | (5,700,000)
Unrecognized compensation expense related to unvested options | $ 34,300,000 |  |
Vesting period | 1 year 2 months 12 days |  |
Warrant outstanding | $ 0 |  |
Deferred income tax benefit | 1,780,000 | (9,714,000) | $ 31,372,000
Stock Compensation Plan [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Deferred income tax benefit | $ 4,200,000 | $ 7,000,000.0 |
Restricted Stock Award [Member] | Minimum [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 3 years |  |
Restricted Stock Award [Member] | Maximum [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 4 years |  |
Restricted Stock Units [Member] | Minimum [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 2 years |  |
Number of shares issuable at the end of the vesting period, percentage | 0.00% |  |
Restricted Stock Units [Member] | Maximum [Member] |  |  |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |  |  |
Vesting period | 3 years |  |
Number of shares issuable at the end of the vesting period, percentage | 200.00% |  |

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