RESTRUCTURING CHARGES - Summary of Charges Resulting from Implementation of Restructuring Plan (Details) - USD ($) $ in Thousands	12 Months Ended		21 Months Ended
	Feb. 29, 2020	Feb. 28, 2019	Feb. 29, 2020
Restructuring Cost And Reserve [Line Items]
Severance and employee related costs	$ 4,400	$ 8,015	$ 6,800
Personnel [Member]
Restructuring Cost And Reserve [Line Items]
Severance and employee related costs	2,547	4,275
Facilities [Member]
Restructuring Cost And Reserve [Line Items]
Severance and employee related costs	1,853	3,740
Cost of Revenue [Member]
Restructuring Cost And Reserve [Line Items]
Severance and employee related costs	2,346	2,586
Cost of Revenue [Member] | Personnel [Member]
Restructuring Cost And Reserve [Line Items]
Severance and employee related costs	493	1,585
Cost of Revenue [Member] | Facilities [Member]
Restructuring Cost And Reserve [Line Items]
Severance and employee related costs	1,853	1,001
Research and Development [Member]
Restructuring Cost And Reserve [Line Items]
Severance and employee related costs	222	1,215
Research and Development [Member] | Personnel [Member]
Restructuring Cost And Reserve [Line Items]
Severance and employee related costs	222	412
Research and Development [Member] | Facilities [Member]
Restructuring Cost And Reserve [Line Items]
Severance and employee related costs		803
Selling and Marketing [Member]
Restructuring Cost And Reserve [Line Items]
Severance and employee related costs	601	2,616
Selling and Marketing [Member] | Personnel [Member]
Restructuring Cost And Reserve [Line Items]
Severance and employee related costs	601	1,228
Selling and Marketing [Member] | Facilities [Member]
Restructuring Cost And Reserve [Line Items]
Severance and employee related costs		1,388
General and Administrative Expenses [Member]
Restructuring Cost And Reserve [Line Items]
Severance and employee related costs	1,231	1,598
General and Administrative Expenses [Member] | Personnel [Member]
Restructuring Cost And Reserve [Line Items]
Severance and employee related costs	$ 1,231	1,050
General and Administrative Expenses [Member] | Facilities [Member]
Restructuring Cost And Reserve [Line Items]
Severance and employee related costs		$ 548