REVENUE Revenue by Geographic Regions (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2021	Sep. 30, 2020	Sep. 30, 2021	Sep. 30, 2020
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 101,640	$ 90,431	$ 290,880	$ 256,165
United States
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	45,026	36,190	126,084	105,166
Other Americas
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	5,222	4,505	15,030	15,841
Europe, Middle East and Africa
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	38,782	37,537	109,400	99,478
Asia-Pacific
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 12,610	$ 12,199	$ 40,366	$ 35,680