RESTRUCTURING CHARGES - Summary of Charges Resulting from Implementation of Restructuring Plan (Details) - USD ($) $ in Thousands	12 Months Ended
	Feb. 28, 2021	Feb. 29, 2020	Feb. 28, 2019
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 4,754	$ 4,400	$ 8,015
Personnel [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	3,904	2,547	4,275
Facilities [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	850	1,853	3,740
Cost of Revenue [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	1,380	2,346	2,586
Cost of Revenue [Member] | Personnel [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	530	493	1,585
Cost of Revenue [Member] | Facilities [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	850	1,853	1,001
Research and Development [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	33	222	1,215
Research and Development [Member] | Personnel [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	33	222	412
Research and Development [Member] | Facilities [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges			803
Selling and Marketing [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	820	601	2,616
Selling and Marketing [Member] | Personnel [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	820	601	1,228
Selling and Marketing [Member] | Facilities [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges			1,388
General and Administrative Expenses [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	2,521	1,231	1,598
General and Administrative Expenses [Member] | Personnel [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges	$ 2,521	$ 1,231	1,050
General and Administrative Expenses [Member] | Facilities [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring charges			$ 548