Common Stock, Number of Votes Per Share

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Share-based Compensation Arrangement by Share-based Payment Award, Increase In Number Of Shares Available For Grant, Percentage Of Shares Outstanding

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Share-based Compensation Arrangement by Share-based Payment Award, Number of Equity Incentive Plans

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Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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Aggregate number of common shares reserved for future issuance.

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Face amount or stated value per share of common stock.

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The maximum number of common shares permitted to be issued by an entity's charter and bylaws.

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Number of shares of common stock outstanding. Common stock represent the ownership interest in a corporation.

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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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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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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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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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Number of shares issued under share-based payment arrangement.

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Percentage of vesting of award under share-based payment arrangement.

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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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Fair value of options vested. Excludes equity instruments other than options, for example, but not limited to, share units, stock appreciation rights, restricted stock.

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Per share amount of par value or stated value of stock classified as temporary equity. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable.

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The maximum number of securities classified as temporary equity that are permitted to be issued by an entity's charter and bylaws. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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The number of securities classified as temporary equity that have been issued and are held by the entity's shareholders. Securities outstanding equals securities issued minus securities held in treasury. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer.

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STOCKHOLDERS’ DEFICIT AND STOCK-BASED COMPENSATION - Narrative (Details) $ / shares in Units, $ in Thousands	1 Months Ended	3 Months Ended
	Dec. 31, 2021 $ / shares shares	Mar. 31, 2022 USD ($) plan vote $ / shares shares	Dec. 08, 2021 shares	Mar. 31, 2021 shares	Dec. 31, 2020 shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock, shares authorized (in shares)	600,000,000	600,000,000
Common stock, par value (in dollars per share) \| $ / shares	$ 0.0001	$ 0.0001
Common stock, shares outstanding (in shares)	66,647,242	66,915,204	15,554,790
Number of votes per share \| vote		1
Convertible preferred stock, shares authorized (in shares)	60,000,000	60,000,000
Convertible preferred stock, par value (in dollars per share) \| $ / shares	$ 0.0001	$ 0.0001
Convertible preferred stock, shares outstanding (in shares)	0	0		40,255,926	40,255,926
Options, unrecognized compensation expense \| $		$ 3,004
Unrecognized expense expected period for recognition		10 months 24 days
Options vested fair value \| $		$ 1,875
Common stock options, outstanding
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common stock reserved for future issuance (in shares)		2,004,969
Increase in shares available for issuance as a percentage		1.00%
Number of shares issued (in shares)		0
Stock Options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		4 years
Award expiration period		10 years
Stock-based compensation expense \| $		$ 1,047
Stock Options \| First anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage		25.00%
Stock Options \| 36 Months following first anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		36 months
Award vesting percentage		75.00%
Restricted Stock Units (RSUs)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Restricted Stock Units (RSUs) \| Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Awards vested ( in shares)		0
Restricted Stock Units (RSUs) \| First anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting percentage		25.00%
Restricted Stock Units (RSUs) \| 36 Months following first anniversary
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		36 months
Award vesting percentage		75.00%
Time-Based RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-option awards granted (in shares)		1,008,500
Time-Based RSUs \| Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period		3 years
Stock-based compensation expense \| $		$ 1,312
Unrecognized expense expected period for recognition		3 years 7 days
Non-option awards granted (in shares)		1,518,500
Non-option awards, unrecognized compensation expense \| $		$ 14,737
Price-Target RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Non-option awards granted (in shares)		300,000
Price-Target RSUs \| Executive Officer
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Stock-based compensation expense \| $		$ 2,821
Unrecognized expense expected period for recognition		7 months 24 days
Non-option awards granted (in shares)		1,070,000
Non-option awards, unrecognized compensation expense \| $		$ 4,352
2013 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of equity incentive plans \| plan		1
Number of shares issued (in shares)		2,588,500
2021 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of common stock reserved for future issuance (in shares)	10,024,848
Increase in shares available for issuance as a percentage	5.00%
Number of shares available for grant (in shares)		7,198,848