STOCK-BASED COMPENSATION (Tables)

3 Months Ended

Mar. 31, 2024

Share-Based Payment Arrangement [Abstract]

Schedule of Stock Option and RSU Activity

The following table summarizes stock option and RSU activity, prices, and values for the three months ended March 31, 2024:

	Number of Shares Available for Issuance Under the Plan	Stock Options			Restricted Stock Units
(in thousands except share price and fair value amounts)		Number of Shares	Weighted- Average Exercise Price		Number of Shares	Weighted- Average Grant Date Fair Value
Balance at December 31, 2023	4,762	32	$	5.79	2,058	$	2.57
Granted	(469)	—	—		469	0.54
RSUs vested	12	—	—		(31)	12.98
Forfeited or expired	20	(2)	5.88		(18)	10.61
Balance at March 31, 2024	4,325	31	$	5.30	2,478	$	1.95

Schedule of Assumptions Used to Value Options Granted

For the three months ended March 31, 2024, and 2023, stock-based compensation expense was as follows:

(stock-based compensation in thousands)	Three Months Ended March 31,
	2024		2023
Stock-based compensation — Options	$	5	$	777
Stock-based compensation — RSUs	$	684	$	490
Total stock-based compensation	$	689	$	1,267