REVISION OF UNAUDITED QUARTERLY FINANCIAL DATA - Statement of Stockholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2023	Jun. 30, 2022	Jun. 30, 2023	Jun. 30, 2022
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ 169,895	$ 175,061	$ 172,354	$ 180,254
Stock-based compensation	5,676	16,423	13,592	30,703
Net loss	(8,024)	(14,159)	(18,770)	(30,775)
Ending balance	167,536	174,312	167,536	174,312
Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	420,980	378,546	412,708	367,153
Stock-based compensation	5,676	16,423	13,592	30,703
Ending balance	426,656	391,967	426,656	391,967
Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(251,151)	(203,593)	(240,405)	(186,977)
Net loss	(8,024)	(14,159)	(18,770)	(30,775)
Ending balance	$ (259,175)	(217,752)	$ (259,175)	(217,752)
As Previously Reported
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss		(12,289)		(27,272)
As Previously Reported | Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance		376,913		367,153
Stock-based compensation		14,553		27,200
Ending balance		388,464		388,464
As Previously Reported | Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance		(201,960)		(186,977)
Net loss		(12,289)		(27,272)
Ending balance		(214,249)		(214,249)
Adjustment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss		(1,870)		(3,503)
Adjustment | Additional Paid-in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance		1,633		0
Stock-based compensation		1,870		3,503
Ending balance		3,503		3,503
Adjustment | Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance		(1,633)		0
Net loss		(1,870)		(3,503)
Ending balance		$ (3,503)		$ (3,503)