INCOME TAXES - Unrecognized Tax Benefits (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020
Reconciliation of Unrecognized Tax Benefits, Excluding Amounts Pertaining to Examined Tax Returns [Roll Forward]
Unrecognized benefit - beginning of period	$ 7,420	$ 2,177
Gross increases - current year tax positions	37,879	4,395
Gross increases - prior year tax positions	909	848
Unrecognized benefit - end of period	$ 46,208	$ 7,420