REVENUE Remaining Performance Obligations (Details) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2021	Dec. 31, 2026	Dec. 31, 2025	Dec. 31, 2024	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Deferred Revenue Arrangement [Line Items]
Revenue, Performance Obligation, Description of Timing	six years
Remaining Performance Obligation	$ 45,100
Unbilled Receivables, Not Billable	38,900
Products
Deferred Revenue Arrangement [Line Items]
Remaining Performance Obligation	5,302
Subscription services
Deferred Revenue Arrangement [Line Items]
Remaining Performance Obligation	6,467
Maintenance contracts
Deferred Revenue Arrangement [Line Items]
Remaining Performance Obligation	71,266
Implied PCS
Deferred Revenue Arrangement [Line Items]
Remaining Performance Obligation	7,031
Implied PCS | Forecast [Member]
Deferred Revenue Arrangement [Line Items]
Remaining Performance Obligation		$ 200	$ 500	$ 1,000	$ 1,500	$ 2,200	$ 1,600
Professional services, training and other
Deferred Revenue Arrangement [Line Items]
Remaining Performance Obligation	$ 1,517