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- Definition

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

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

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

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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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Number of share options (or share units) exercised during the current period.

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SHARE-BASED COMPENSATION - Narrative (Details) - USD ($)	1 Months Ended		3 Months Ended		6 Months Ended
	May 31, 2021	Jun. 30, 2019	Jun. 30, 2022	Jun. 30, 2021	Jun. 30, 2022	Jun. 30, 2021	Dec. 31, 2021	Oct. 01, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)			17,161,000		17,161,000		15,703,000
Share-based compensation expense			$ 1,802,000	$ 1,259,000	$ 3,696,000	$ 2,217,000
Unrecognized compensation cost, non-vested stock options			$ 8,600,000		$ 8,600,000
Weighted average period unvested stock to be recognized					2 years 4 months 9 days
Weighted-average grant-date fair value of stock options granted (in dollars per share)					$ 0.46	$ 2.17
Exercise of stock options (in shares)					0
Share-based Payment Arrangement, Employee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Options outstanding (in shares)			3,500,000		3,500,000
Stock options
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)			17,161,000		17,161,000		15,703,000
Share-based compensation expense			$ 1,200,000	$ 1,300,000	$ 2,500,000	$ 2,200,000
Stock options \| 2014 Stock Incentive Plan
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)			3,100,000		3,100,000
Award vesting period					4 years
Expected term					10 years
Options outstanding (in shares)			13,600,000		13,600,000
Stock options \| 2014 Stock Incentive Plan \| Vesting on the First Anniversary of Date of Grant
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of original number of shares subject to the option vesting					25.00%
Stock options \| 2014 Stock Incentive Plan \| Vesting at End of Each Successive Three-Month Period Thereafter
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Percentage of original number of shares subject to the option vesting					6.25%
Stock options \| Stock Incentive Plan 2009
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term					10 years
Vested stock options outstanding (in shares)					100,000
RSU
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares reserved for future issuance (in shares)			8,063,000		8,063,000		3,041,000
Unrecognized compensation expense			$ 3,000,000		$ 3,000,000
Share-based compensation expense			600,000		$ 1,200,000	$ 0
Unvested grant restricted stock units (in shares)					4,161,000	0
RSU \| Retention Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares received per award (in shares)								1
PSUs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized compensation expense			3,000,000		$ 3,000,000
Share-based compensation expense			600,000		$ 1,200,000	$ 0
Unvested grant restricted stock units (in shares)					1,004,000	0
PSUs \| Retention Program
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Shares received per award (in shares)								1
Percent of base salary								50.00%
Unrecognized compensation expense			$ 54,000		$ 54,000		$ 87,000	$ 400,000
Achievement deemed probable, percent			20.00%		20.00%
Share-based compensation expense			$ 11,000		$ 33,000