FAIR VALUE MEASUREMENTS - Financial Assets And Liabilities Measured At Fair Value On Recurring Basis (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Acquisition-related contingent consideration | Accounts Payable and Accrued Liabilities
Liabilities:
Fair value of financial liabilities measured on recurring basis		$ 5,700
Acquisition-related contingent consideration | Other Liabilities
Liabilities:
Fair value of financial liabilities measured on recurring basis		14,300
Money Market Funds | Restricted cash and cash equivalents
Assets:
Fair value of financial assets measured on recurring basis	$ 14,500	16,200
Fair value, measurements, recurring | Acquisition-related contingent consideration
Liabilities:
Fair value of financial liabilities measured on recurring basis	15,812	20,076
Fair value, measurements, recurring | Money Market Funds
Assets:
Fair value of financial assets measured on recurring basis	14,539	134,847
Fair value, measurements, recurring | Level 1 Inputs | Acquisition-related contingent consideration
Liabilities:
Fair value of financial liabilities measured on recurring basis	0	0
Fair value, measurements, recurring | Level 1 Inputs | Money Market Funds
Assets:
Fair value of financial assets measured on recurring basis	14,539	134,847
Fair value, measurements, recurring | Level 2 Inputs | Acquisition-related contingent consideration
Liabilities:
Fair value of financial liabilities measured on recurring basis	0	0
Fair value, measurements, recurring | Level 2 Inputs | Money Market Funds
Assets:
Fair value of financial assets measured on recurring basis	0	0
Fair value, measurements, recurring | Level 3 Inputs | Acquisition-related contingent consideration
Liabilities:
Fair value of financial liabilities measured on recurring basis	15,812	20,076
Fair value, measurements, recurring | Level 3 Inputs | Money Market Funds
Assets:
Fair value of financial assets measured on recurring basis	$ 0	$ 0