RESTRUCTURING CHARGES - Summary of Activity Resulting from Implementation of Restructuring Plan within Other Current and Non-current Liabilities (Details) - USD ($) $ in Thousands	9 Months Ended	18 Months Ended
	Nov. 30, 2019	Nov. 30, 2019
Restructuring Cost And Reserve [Line Items]
Restructuring liabilities as of February 28, 2019	$ 5,756
Cease-use liability reclassified as reduction of Operating lease right-of-use assets	(2,977)
Charges	1,924	$ 6,200
Payments	(1,975)
Restructuring liabilities as of November 30, 2019	2,728	2,728
Personnel [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring liabilities as of February 28, 2019	2,779
Charges	1,924
Payments	(1,975)
Restructuring liabilities as of November 30, 2019	2,728	$ 2,728
Facilities [Member]
Restructuring Cost And Reserve [Line Items]
Restructuring liabilities as of February 28, 2019	2,977
Cease-use liability reclassified as reduction of Operating lease right-of-use assets	$ (2,977)