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DEBT AND FINANCING ARRANGEMENTS - Interest Expense Recognized (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2021
Jun. 30, 2022
Jun. 30, 2021
Debt Disclosure [Abstract]      
Contractual interest expense (due in cash) $ 575 $ 575  
Amortization of debt discount 2,359 0 $ 4,680
Amortization of debt issuance costs 215 365  
Total interest expense related to the Notes $ 3,149 $ 940