SEGMENT REPORTING - Geographic (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Segment reporting
Revenue recognition	$ 83,821	$ 52,061	$ 222,153	$ 155,207
Property and equipment, net	42,830		42,830		$ 52,671
Assets held for sale	8,020		8,020
United States
Segment reporting
Revenue recognition	82,851	51,100	219,422	152,007
Property and equipment, net	38,932		38,932		38,564
Canada
Segment reporting
Revenue recognition	970	$ 961	2,731	$ 3,200
Property and equipment, net	3,328		3,328		13,831
Assets held for sale	8,000		8,000
India
Segment reporting
Property and equipment, net	$ 570		$ 570		$ 276