Share-based Compensation Plans - Additional Information (Details) - USD ($) $ / shares in Units, $ in Millions	12 Months Ended
Dec. 31, 2021	Dec. 31, 2020
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Weighted average grant-date fair values of options granted	$ 1.76	$ 0.01
Unrecognized share-based compensation expense related to stock options	$ 2.6
Weighted average period of unrecognized share-based compensation expense	1 year 8 months 12 days
Unrecognized share-based compensation expense related to non-vested shares	$ 1.8
Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option grants, term	10-year
Weighted average period of unrecognized share-based compensation expense	2 years 2 months 12 days
Maximum \| Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option, vesting period	4 years
Minimum \| Stock Options
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Stock option, vesting period	3 years
2018 EIP \| Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for grant	0
2018 EIP \| Maximum \| Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares available for grant	13,900,000
2021 Employee Stock Purchase Plan
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number of shares grated as a result of equity incentive plan	6,100,000
Percentage of shares of company's common stock outstanding	4.00%
Shares reserved for issuance under ESPP	375,000
2021 Employee Stock Purchase Plan \| Maximum
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Shares reserved for issuance under ESPP	3,500,000
Ratio of annual increase shares reserved for issuance under ESPP to number of shares of common stock outstanding	1.00%

Percentage of shares of company's common stock outstanding.

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Ratio of annual increase shares reserved for issuance under ESPP to number of shares of common stock outstanding.

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Shares reserved for issuance under Employee Stock Purchase Plan.

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No definition available.

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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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-Name Accounting Standards Codification
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Amount of cost to be recognized for nonvested award under share-based payment arrangement. Excludes share and unit options.

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Amount of cost to be recognized for option under share-based payment arrangement.

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Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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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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The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Description of terms of award under share-based payment arrangement.

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Number, after forfeiture, of shares or units issued under share-based payment arrangement. Excludes shares or units issued under employee stock ownership plan (ESOP).

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