REVENUE Revenue by Type (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($)	Sep. 30, 2021 USD ($)
Revenue from Contract with Customer [Abstract]
Number of reportable segments			1
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 102,985	$ 101,640	$ 301,314	$ 290,880
Subscription
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	41,782	28,008	108,878	74,384
Maintenance
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	27,280	30,702	83,382	90,997
Integrated solutions & other
Segment Reporting, Revenue Reconciling Item [Line Items]
Revenues	$ 33,923	$ 42,930	$ 109,054	$ 125,499