FAIR VALUE - Contingent Consideration Fair Value (Details) - Level 3 - USD ($) $ in Thousands	Dec. 31, 2021	Dec. 31, 2020
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration obligation	$ 33,908	$ 31,140
Fusion Acquisition
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration obligation	27,166	26,910
Noble Acquisition
Fair Value, Liabilities Measured on Recurring Basis, Unobservable Input Reconciliation [Line Items]
Contingent consideration obligation	$ 6,742	$ 4,230