CONTRACT BALANCES AND CONTRACT COSTS - Disaggregation of Revenue by Service Type (Details) - USD ($) $ in Thousands	3 Months Ended
	Apr. 29, 2022	Apr. 30, 2021
Disaggregation of Revenue [Line Items]
Total net revenue	$ 121,015	$ 139,463
Taegis Subscription Solutions
Disaggregation of Revenue [Line Items]
Total net revenue	37,216	13,960
Managed Security Services
Disaggregation of Revenue [Line Items]
Total net revenue	57,197	90,110
Subscription
Disaggregation of Revenue [Line Items]
Total net revenue	94,413	104,070
Professional services
Disaggregation of Revenue [Line Items]
Total net revenue	$ 26,602	$ 35,393