OTHER FINANCIAL INFORMATION (Schedule of Interest Expense) (Details) - USD ($) $ in Thousands	3 Months Ended
	May 31, 2021	May 31, 2020
Condensed Income Statements, Captions [Line Items]
Amortization of discount and issue costs	$ 2,606	$ 2,753
Other interest expense	156	221
Total interest expense	3,849	4,077
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
2025 Convertible Notes [Member]
Condensed Income Statements, Captions [Line Items]
Stated interest	1,176	1,163
Amortization of discount and issue costs	2,517	2,311
Interest expense on convertible notes	$ 3,693	$ 3,474