Fair value of a share of common stock.

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- Definition

Maximum threshold common stock issuable on exercise of incentive stock options.

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- Definition

Share based compensation arrangement by share based payment award Cumulative annual increase in common stock shares reserved for issuance, percentage.

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No definition available.

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Share based compensation arrangement by share based payment award Cumulative annual increase in shares reserved for issuance, percentage.

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- Definition

Share based compensation arrangement by share based payment award shares of common stock outstanding maximum cumulative annual increase.

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No definition available.

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- Definition

Aggregate number of common shares reserved for future issuance.

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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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- Definition

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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- Definition

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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No definition available.

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- Definition

Number of shares authorized for issuance under share-based payment arrangement.

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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

Number of options outstanding, including both vested and non-vested options.

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Period from grant date that an equity-based award expires, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average grant-date fair value of options vested.

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- Definition

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

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Share-Based Compensation - Additional Information (Detail) - USD ($) $ / shares in Units, $ in Millions		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2021	Sep. 30, 2020	Jun. 30, 2021	Dec. 31, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of a share of common stock				$ 16.00	$ 0.83
Share based compensation by share based payment arrangement unrecognized compensation costs non vested options	$ 3.1	$ 3.1
Share based compensation by share based payment arrangement unrecognized compensation costs weighted aveage period of recognition			3 years 2 months 12 days
Weighted average grant date fair value of options granted		$ 1.34
Stock options outstanding, Shares	3,662,365	3,662,365			1,001,517
2013 Amended And Restated Stock Performance Plan [Member] \| Stock Options Granted Before December 31, 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation by share based payment arrangement contractual term		10 years
2013 Amended And Restated Stock Performance Plan [Member] \| Stock Options Granted Before December 31, 2017 [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation by share based payment arrangement vesting period		3 months
2013 Amended And Restated Stock Performance Plan [Member] \| Stock Options Granted Before December 31, 2017 [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation by share based payment arrangement vesting period		24 months
2021 Equity Incentive Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grant	4,033,681	4,033,681
Share based compensation arrangement by share based payment award Cumulative annual increase in common stock shares reserved for issuance, percentage				5.00%
Share based compensation arrangement by share based payment award number of shares authorized	4,217,104	4,217,104
Common stock shares reserved for future issuance	4,033,681	4,033,681
2021 Equity Incentive Plan [Member] \| Series A1 Convertible Preferred Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grant				7,698,282
Common stock shares reserved for future issuance				7,698,282
2021 Equity Incentive Plan [Member] \| New Shares [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares available for future grant				3,550,000
Common stock shares reserved for future issuance				3,550,000
2021 Equity Incentive Plan [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Maximum threshold common stock issuable on exercise of incentive stock options				12,000,000
Employee Stock Purchase Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation arrangement by share based payment award Cumulative annual increase in shares reserved for issuance, percentage				1.00%
Share based compensation arrangement by share based payment award shares of common stock outstanding maximum cumulative annual increase				800,000
Stock issued during period shares employee stock purchase plans	0
Employee Stock Purchase Plan [Member] \| Employee Stock [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, capital shares reserved for future issuance				375,000
Two Thousand And Thirteen Plan [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock options outstanding, Shares	3,478,942	3,478,942
2013 and 2021 Amended And Restated Stock Performance Plan [Member] \| Stock Options Granted After December 31, 2017 [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation by share based payment arrangement contractual term		10 years
2013 and 2021 Equity Incentive Plan [Member] \| Stock Options Granted After December 31, 2017 [Member] \| Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation by share based payment arrangement vesting period		24 months
2013 and 2021 Equity Incentive Plan [Member] \| Stock Options Granted After December 31, 2017 [Member] \| Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Share based compensation by share based payment arrangement vesting period		36 months