INCOME TAXES - Schedule of Difference Between Benefit for Income Taxes and Federal Statutory Income Tax Rate (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Income Tax Disclosure [Abstract]
Tax at federal statutory rate	$ (40,288)	$ (37,372)	$ (25,363)
State taxes, net	(6,895)	(6,734)	(3,168)
Foreign rate differential	309	362	376
Global Intangible Low-taxed Income	1,002	637	1,335
Non-deductible stock-based compensation	3,545	2,770	4,232
Research credits	(6,694)	(5,230)	(3,657)
Change in valuation allowance	44,005	45,373	26,537
Transfer pricing settlement	4,343	0	0
Other	1,102	500	53
Income tax expense	$ 429	$ 306	$ 345