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RESTRUCTURING CHARGE - Schedule of changes in accrued restructuring charge (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Jun. 30, 2023
Jun. 30, 2022
Restructuring Reserve [Roll Forward]        
Balance, beginning of period $ 1,996 $ 599 $ 2,335 $ 624
Restructuring charge 628 0 721 0
Cash paid (929) (28) (1,367) (55)
Non-cash items 97 3 103 5
Balance, end of period $ 1,792 $ 574 $ 1,792 $ 574