RESTRUCTURING CHARGE - Schedule of changes in accrued restructuring charge (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Restructuring Reserve [Roll Forward]
Balance, beginning of period	$ 574	$ 676	$ 624	$ 727
Restructuring charge	8,016	0	8,016	0
Cash paid	(1,448)	(29)	(1,503)	(86)
Non-cash items	(4,620)	3	(4,615)	9
Balance, end of period	$ 2,522	$ 650	$ 2,522	$ 650