SEGMENT AND GEOGRAPHICAL REPORTING - Narrative (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019
Segment Reporting Information [Line Items]
Identifiable assets at year end	$ 906,192	$ 868,131
Depreciation	9,946	10,396	$ 10,100
Corporate
Segment Reporting Information [Line Items]
Capital expenditures	2,400	1,000	9,500
Identifiable assets at year end	85,000	114,100	56,800
Depreciation	$ 1,800	$ 2,300	$ 1,700