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Equity-based Compensation - Option and Grant Plans - Additional Information (Detail) - shares	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment award, number of shares granted	1,616,255	2,182,773	2,832,784
Minimum [Member] \| Restricted Stock Unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting period	2 years
Maximum [Member] \| Restricted Stock Unit [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting period	3 years
Option and Grant Plans [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based compensation, vesting period	4 years
Share-based compensation, options, contractual life	10 years
Option and Grant Plans [Member] \| IPO [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share-based payment award, number of shares granted	0
2018 Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of authorized for issuance	25,005,365
Number of shares available for future grant	10,298,664