OTHER FINANCIAL INFORMATION (Schedule of Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Nov. 30, 2021	Nov. 30, 2020	Nov. 30, 2021	Nov. 30, 2020
Condensed Income Statements, Captions [Line Items]
Amortization of discount and issue costs			$ 7,811	$ 7,712
Other interest expense	$ 123	$ 356	422	955
Total interest expense	3,830	3,880	11,483	11,814
2025 Convertible Notes [Member]
Condensed Income Statements, Captions [Line Items]
Stated interest	1,150	1,150	3,476	3,463
Amortization of discount and issue costs	2,557	2,374	7,585	7,014
Interest expense on convertible notes	$ 3,707	$ 3,524	$ 11,061	10,477
2020 Convertible Notes [Member]
Condensed Income Statements, Captions [Line Items]
Stated interest				93
Amortization of discount and issue costs				289
Interest expense on convertible notes				$ 382