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LONG-TERM DEBT - Accounts Receivable Facility (Details) - USD ($)
$ in Thousands
9 Months Ended
Jul. 15, 2021
Sep. 30, 2021
Sep. 30, 2020
Dec. 31, 2020
Debt Instrument [Line Items]        
Borrowing under the accounts receivable facility   $ 75,000 $ 0  
Accounts receivable facility        
Debt Instrument [Line Items]        
Borrowing under the accounts receivable facility $ 75,000      
Carrying value of debt   $ 75,000   $ 0