REVENUE Deferred Revenue Activity (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2023	Mar. 31, 2022
Movement in Deferred Revenue [Roll Forward]
Deferred revenue at beginning of period	$ 94,150	$ 98,082
Billings deferred	27,209	29,506
Recognition of prior deferred revenue	(38,908)	(35,266)
Deferred revenue at end of period	82,451	92,322
Deferred Revenue Arrangement [Line Items]
Remaining Performance Obligation	19,400
Deferred Revenue	82,451	$ 92,322
Subscription
Deferred Revenue Arrangement [Line Items]
Remaining Performance Obligation	3,958
Subscription Arrangement [Member]
Deferred Revenue Arrangement [Line Items]
Remaining Performance Obligation	15,773
Maintenance contracts
Deferred Revenue Arrangement [Line Items]
Remaining Performance Obligation	56,339
Implied PCS
Deferred Revenue Arrangement [Line Items]
Remaining Performance Obligation	3,598
Professional services, training and other
Deferred Revenue Arrangement [Line Items]
Remaining Performance Obligation	$ 2,783