REVISION OF UNAUDITED QUARTERLY FINANCIAL DATA - Statement of Stockholders' Equity (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2022	Sep. 30, 2022	Jun. 30, 2022	Mar. 31, 2022	Dec. 31, 2021	Sep. 30, 2021	Jun. 30, 2021	Mar. 31, 2021	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Stock-based compensation									$ 62,511	$ 60,231	$ 4
Net loss	$ (14,198)	$ (8,455)	$ (14,159)	$ (16,616)	$ (5,490)	$ (5,222)	$ (17,644)	$ (14,778)	(53,428)	(43,134)	1,687
Additional Paid–in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	403,164	391,967	378,546	367,153					367,153
Stock-based compensation		16,127	16,423	14,280					62,511	60,231	$ 4
Ending balance		403,164	391,967	378,546	367,153					367,153
Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(226,207)	(217,752)	(203,593)	(186,977)					(186,977)
Ending balance		(226,207)	(217,752)	(203,593)	(186,977)					(186,977)
As Previously Reported
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss		(7,340)	(12,289)	(14,983)
As Previously Reported | Additional Paid–in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	398,546	388,464	376,913	367,153					367,153
Stock-based compensation		15,012	14,553	12,647
Ending balance		398,546	388,464	376,913	367,153					367,153
As Previously Reported | Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	(221,589)	(214,249)	(201,960)	(186,977)					(186,977)
Ending balance		(221,589)	(214,249)	(201,960)	(186,977)					(186,977)
Adjustment
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Net loss		(1,115)	(1,870)	(1,633)
Adjustment | Additional Paid–in Capital
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	4,618	3,503	1,633	0					0
Stock-based compensation		1,115	1,870	1,633
Ending balance		4,618	3,503	1,633	0					0
Adjustment | Accumulated Deficit
Increase (Decrease) in Stockholders' Equity [Roll Forward]
Beginning balance	$ (4,618)	(3,503)	(1,633)	0					$ 0
Ending balance		$ (4,618)	$ (3,503)	$ (1,633)	$ 0					$ 0