REVENUE Deferred Revenue Activity (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2019	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Deferred Revenue Arrangement [Line Items]
Revenue, Remaining Performance Obligation, Expected Timing of Satisfaction, Period	6 years
Revenue, Remaining Performance Obligation, Amount	$ 51,200
Unbilled Receivables, Not Billable	50,700
Movement in Deferred Revenue [Roll Forward]
Deferred Revenue	84,981						$ 99,601
Deferred Revenue, Additions	54,882
Deferred Revenue, Revenue Recognized	69,502
Product [Member]
Deferred Revenue Arrangement [Line Items]
Revenue, Remaining Performance Obligation, Amount	7,363
Subscription Arrangement [Member]
Deferred Revenue Arrangement [Line Items]
Revenue, Remaining Performance Obligation, Amount	2,071
Software Service, Support and Maintenance Arrangement [Member]
Deferred Revenue Arrangement [Line Items]
Revenue, Remaining Performance Obligation, Amount	60,681
Nonsoftware Service, Support and Maintenance Arrangement [Member]
Deferred Revenue Arrangement [Line Items]
Revenue, Remaining Performance Obligation, Amount	12,816
Nonsoftware Service, Support and Maintenance Arrangement [Member] | Forecast [Member]
Deferred Revenue Arrangement [Line Items]
Revenue, Remaining Performance Obligation, Amount		$ 1,000	$ 1,700	$ 3,000	$ 5,000	$ 1,600
Software License Arrangement [Member]
Deferred Revenue Arrangement [Line Items]
Revenue, Remaining Performance Obligation, Amount	$ 2,050