STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2022

Disclosure Of Compensation Related Costs Sharebased Payments [Abstract]

Schedule of Stock-Based Compensation Expense

Total stock-based compensation expense recorded as research and development and general and administrative expenses, respectively, for employees, directors and non-employees for the three months ended March 31, 2022 and 2021 is as follows:

	Three Months Ended March 31,
	2022		2021
Research and development	$	282	$	304
General and administrative		564		685
Total stock-based compensation expense	$	846	$	989