RESTRUCTURING CHARGES - Summary of Charges Resulting from Implementation of Restructuring Plan (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended		27 Months Ended
	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2020	Aug. 31, 2019	Aug. 31, 2020
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 551	$ 2,272	$ 2,459	$ 2,272	$ 14,900
Personnel [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	480	1,062	2,285	1,062
Facilities [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	71	1,210	174	1,210
Cost of Revenue [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	468	1,559	447	1,559
Cost of Revenue [Member] | Personnel [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	397	349	273	349
Cost of Revenue [Member] | Facilities [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	71	1,210	174	1,210
Selling and Marketing [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges		447	30	447
Selling and Marketing [Member] | Personnel [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges		447	30	447
General and Administrative Expenses [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	83	266	1,982	266
General and Administrative Expenses [Member] | Personnel [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 83	$ 266	$ 1,982	$ 266