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Aggregate number of common shares reserved for future issuance.

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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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Per share or unit weighted-average fair value of nonvested award under share-based payment arrangement. Excludes share and unit options.

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Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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Amount of accumulated difference between fair value of underlying shares on dates of exercise and exercise price on options exercised (or share units converted) into shares.

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Purchase price of common stock expressed as a percentage of its fair value.

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Number of shares issued during the period as a result of an employee stock purchase plan.

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Stock-based Compensation - Additional Information (Detail)	3 Months Ended		12 Months Ended
	Mar. 31, 2023 USD ($) Installment $ / shares shares	Mar. 31, 2022 USD ($) shares	Dec. 31, 2022 USD ($)	Sep. 27, 2017 shares
Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Compensation cost related to nonvested awards not yet recognized \| $	$ 86,900,000
2021 Employee Stock Purchase Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Percentage of purchase price for each share of common stock purchased of lower of fair market value per share on first day of applicable offering period	85.00%
Stock-based compensation expense \| $	$ 600,000	$ 700,000
2021 Employee Stock Purchase Plan [Member] \| The Timing of Payroll Deductions [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Amount withheld on behalf of employees for a future purchase \| $	$ 2,200,000		$ 4,000,000.0
2021 Employee Stock Purchase Plan [Member] \| Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for issuance \| shares	2,922,942
Issuance of common stock for employee stock purchase program (in shares) \| shares	92,018
Class A Common Stock [Member] \| Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock for employee stock purchase program (in shares) \| shares	92,000	77,000
2017 Plan [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Intrinsic value of options exercised \| $	$ 4.6
2017 Plan [Member] \| Restricted Stock Units (RSUs) [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant date fair value of RSUs \| $ / shares	$ 65.12
Number of vesting equal annual installments \| Installment	4
Weighted average period of recognition	2 years 8 months 12 days
2017 Plan [Member] \| Class A Common Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock reserved for issuance \| shares				16,999,318