REVENUE Revenue by Geographic Regions (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2021	Jun. 30, 2020	Jun. 30, 2021	Jun. 30, 2020
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 94,876	$ 79,281	$ 189,240	$ 165,734
United States
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	41,587	32,886	81,058	68,976
Other Americas
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	4,629	5,886	9,809	11,336
Europe, Middle East and Africa
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	34,094	28,706	70,617	61,941
Asia-Pacific
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 14,566	$ 11,803	$ 27,756	$ 23,481