Quarterly report pursuant to Section 13 or 15(d)

FAIR VALUE MEASUREMENTS - Narrative (Details)

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FAIR VALUE MEASUREMENTS - Narrative (Details) - USD ($)
$ in Thousands
 3 Months Ended
Mar. 31, 2022
Dec. 31, 2021
Mar. 31, 2021
Dec. 31, 2020
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Unrealized loss $ 600      
Recurring | Level 3        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Acquisition holdback and earn out liabilities 23,399 $ 25,156 $ 32,976 $ 35,744
International Bond | Level 2        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investments 13,000      
International Bond | Other current assets | Level 2        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investments 500 $ 12,600    
International Bond | Other assets | Level 2        
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]        
Investments $ 12,500