SUBSEQUENT EVENTS (Details) $ in Thousands		3 Months Ended		9 Months Ended
	Nov. 03, 2022 USD ($) Student	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)
Revenue from Contract with Customer [Abstract]
Revenues		$ 91,813	$ 89,059	$ 256,510	$ 247,520
Operating loss		$ 4,880	$ 5,745	4,951	$ 15,217
Massachusetts [Member]
Revenue from Contract with Customer [Abstract]
Revenues				$ 5,300
Percentage of revenue				2.10%
Operating loss				$ (200)
Subsequent Event [Member] | Massachusetts [Member]
Revenue from Contract with Customer [Abstract]
Number of students | Student	300
Campus closing costs	$ 2,000