COMMITMENTS AND CONTINGENCIES (Details) - USD ($) $ in Thousands		3 Months Ended		9 Months Ended
	Aug. 03, 2021	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
COMMITMENTS AND CONTINGENCIES
Revenue recognition		$ 52,061	$ 52,979	$ 155,207	$ 151,223
Settlement amount awarded to other party	$ 8,400
Unapproved Products [Member]
COMMITMENTS AND CONTINGENCIES
Revenue recognition		4,200	4,300	12,200	12,400
Unapproved Products [Member] | Contract Customer [Member]
COMMITMENTS AND CONTINGENCIES
Revenue recognition		$ 700	$ 700	$ 2,100	$ 2,300