STOCK-BASED COMPENSATION - Stock Options (Details) - USD ($) $ / shares in Units, $ in Thousands	6 Months Ended
Jun. 30, 2026	Jun. 30, 2025
Options Outstanding
Beginning balance (in shares)	21,829,679
Options granted (in shares)	211,352
Options exercised (in shares)	0	0
Options forfeited (in shares)	(451,585)
Options expired (in shares)	(5,086,133)
Ending balance (in shares)	16,503,313
Options, exercisable (in shares)	7,313,937
Weighted Average Exercise Price
Beginning balance (in dollars per share)	$ 0.58
Weighted average exercise price, options granted (in dollars per share)	0.2
Options forfeited (in dollars per share)	0.48
Options expired (in dollars per share)	0.61
Ending balance (in dollars per share)	0.56
Options, exercisable (in dollars per share)	$ 0.74
Weighted Average Remaining Contractual Term
Weighted average remaining contractual term, outstanding	6 years
Weighted average remaining contractual term, exercisable	4 years
Options outstanding, aggregate intrinsic value	$ 19,000
Options exercisable, aggregate intrinsic value	$ 7,250

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The number of shares into which fully or partially vested stock options outstanding as of the balance sheet date can be currently converted under the option plan.

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The weighted-average price as of the balance sheet date at which grantees can acquire the shares reserved for issuance on vested portions of options outstanding and currently exercisable under the stock option plan.

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Number of options or other stock instruments for which the right to exercise has lapsed under the terms of the plan agreements.

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The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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Gross number of share options (or share units) granted during the period.

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Amount by which the current fair value of the underlying stock exceeds the exercise price of options outstanding.

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

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A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

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Weighted average price at which grantees can acquire the shares reserved for issuance under the stock option plan.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options of the plan that expired.

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Weighted average price at which grantees could have acquired the underlying shares with respect to stock options that were terminated.

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Weighted average per share amount at which grantees can acquire shares of common stock by exercise of options.

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Amount of difference between fair value of the underlying shares reserved for issuance and exercise price of vested portions of options outstanding and currently exercisable.

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Weighted average remaining contractual term of exercisable stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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Weighted average remaining contractual term of outstanding stock options, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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

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