REVENUE Remaining Performance Obligations (Details) - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2020	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
Deferred Revenue Arrangement [Line Items]
Revenue, Performance Obligation, Description of Timing	six years
Remaining Performance Obligation	$ 53,700
Unbilled Receivables, Not Billable	48,100
Products
Deferred Revenue Arrangement [Line Items]
Remaining Performance Obligation	5,133
Subscription services
Deferred Revenue Arrangement [Line Items]
Remaining Performance Obligation	3,320
Support contracts
Deferred Revenue Arrangement [Line Items]
Remaining Performance Obligation	61,596
Implied PCS
Deferred Revenue Arrangement [Line Items]
Remaining Performance Obligation	8,860
Implied PCS | Forecast [Member]
Deferred Revenue Arrangement [Line Items]
Remaining Performance Obligation		$ 500	$ 800	$ 1,200	$ 2,000	$ 3,300	$ 1,100
Professional services, training and other
Deferred Revenue Arrangement [Line Items]
Remaining Performance Obligation	$ 2,255