Common Stock, Additional Capital Shares Reserved for Future Issuance

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Achievement Deemed Probable, Percent

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Percent Of Base Salary

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Shares Received Per Award

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- Definition

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

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- Definition

Aggregate number of common shares reserved for future issuance.

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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

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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- Definition

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

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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- Definition

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

Weighted average remaining contractual term for equity-based awards excluding options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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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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- 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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- Definition

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

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Percentage of vesting of award under share-based payment arrangement.

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- Definition

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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Number of options vested.

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SHARE-BASED COMPENSATION - Narrative (Details) - USD ($)	1 Months Ended		12 Months Ended
	May 31, 2021	Jun. 30, 2019	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Oct. 01, 2021	Dec. 31, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)			15,304,000	15,703,000	10,147,000		6,236,000
Share-based compensation expense			$ 6,909,000	$ 5,143,000	$ 1,757,000
Unrecognized compensation cost, non-vested stock options			$ 5,500,000
Weighted average period unvested stock to be recognized			1 year 10 months 17 days
Weighted-average grant-date fair value of stock options granted (in dollars per share)			$ 0.46	$ 2.16	$ 0.56
Share-based Payment Arrangement, Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)			2,900,000
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)			15,304,000	15,703,000
Share-based compensation expense			$ 4,300,000	$ 4,600,000	$ 1,800,000
RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)			4,695,000	3,041,000
Unvested weighted average remaining contractual life			2 years 8 months 1 day	9 years 9 months
Performance-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period			4 years
Unvested weighted average remaining contractual life			2 years 8 months 1 day	9 years 9 months
2014 Stock Incentive Plan \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares reserved for issuance (in shares)	12,000,000	7,900,000
Shares reserved for future issuance (in shares)			4,500,000
Award vesting period			4 years
Expected term			10 years
Options outstanding (in shares)			12,200,000
Retention Program \| RSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares received per award (in shares)			1
Share-based compensation expense			$ 2,500,000	$ 500,000	$ 0
Retention Program \| Performance-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares received per award (in shares)						1
Share-based compensation expense			55,000
Percent of base salary						50.00%
Unrecognized compensation expense			32,000
Retention Program, cash management milestone \| Performance-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense			$ 87,000
Achievement deemed probable, percent			20.00%
Stock Incentive Plan 2009 \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term			10 years
Vested stock options outstanding (in shares)			100,000
Vesting on the First Anniversary of Date of Grant \| 2014 Stock Incentive Plan \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of original number of shares subject to the option vesting			25.00%
Vesting at End of Each Successive Three-Month Period Thereafter \| 2014 Stock Incentive Plan \| Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of original number of shares subject to the option vesting			6.25%