FAIR VALUE MEASUREMENTS - Valuation of financial instruments (Details) - USD ($) $ in Thousands	Mar. 31, 2022	Dec. 31, 2021
Private Placement Warrants [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability	$ 2,005	$ 485
Fair Value, Inputs, Level 3 [Member] | Private Placement Warrants [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Derivative Liability	2,005	485
Fair Value, Recurring [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents	203,564	244,016
Fair Value, Recurring [Member] | Fair Value, Inputs, Level 1 [Member]
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Cash and Cash Equivalents	$ 203,564	$ 244,016