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

SHARE-BASED COMPENSATION, SHARE-BASED COMPENSATION (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2022	Mar. 31, 2021	Dec. 31, 2021	Dec. 31, 2020
Stock options
Stock-based compensation (in dollars)	$ 56	$ 52
Expected term	10 years
Vesting period	48 months
Cumulative Adjustment on adoption of ASU 2016-09.	$ 15,516	25,524	$ 18,115	$ 19,186
Research and development
Stock options
Stock-based compensation (in dollars)	6	3
General and administrative
Stock options
Stock-based compensation (in dollars)	50	49
Stock Options
Stock options
Stock-based compensation (in dollars)	$ 48	$ 28