SHARE-BASED COMPENSATION, STOCK OPTIONS, AND RESTRICTED SECURITIES - Share-based compensation (Details) - USD ($) $ in Thousands	12 Months Ended
Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Stock options
Stock-based compensation (in dollars)	$ 159	$ 315
Expected term	10 years
Vesting period	48 months
Cumulative Adjustment on adoption of ASU 2016-09.	$ 15,746	18,115	$ 19,186
Research and development
Stock options
Stock-based compensation (in dollars)	(8)	22
General and administrative
Stock options
Stock-based compensation (in dollars)	167	293
Stock Options
Stock options
Stock-based compensation (in dollars)	$ 157	$ 219

Total of all stockholders' equity (deficit) items, net of receivables from officers, directors, owners, and affiliates of the entity which are attributable to the parent. The amount of the economic entity's stockholders' equity attributable to the parent excludes the amount of stockholders' equity which is allocable to that ownership interest in subsidiary equity which is not attributable to the parent (noncontrolling interest, minority interest). This excludes temporary equity and is sometimes called permanent equity.

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+ Details