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ACCOUNTS PAYABLE AND ACCRUED EXPENSES (Details) - USD ($)
$ in Thousands
Dec. 31, 2021
Dec. 31, 2020
Payables and Accruals [Abstract]    
Accounts payable $ 86,461 $ 70,071
Accrued expenses 93,420 84,312
Accrued salary and benefits 62,425 58,051
Accrued professional fees 21,631 24,250
Total $ 263,937 $ 236,684