SEGMENT AND GEOGRAPHIC DATA (Summary of Revenues by Geographic Area) (Details) - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 28, 2018	Nov. 30, 2017	Aug. 31, 2017	May 31, 2017	Feb. 28, 2017	Nov. 30, 2016	Aug. 31, 2016	May 31, 2016	Feb. 28, 2018	Feb. 28, 2017	Feb. 29, 2016
Segment Reporting Information [Line Items]
Revenues	$ 94,395	$ 93,669	$ 89,767	$ 88,081	$ 86,126	$ 83,350	$ 90,479	$ 91,147	$ 365,912	$ 351,102	$ 280,719
United States [Member]
Segment Reporting Information [Line Items]
Revenues									265,613	259,974	232,995
Europe, Middle East and Africa [Member]
Segment Reporting Information [Line Items]
Revenues									45,830	49,918	19,178
South America [Member]
Segment Reporting Information [Line Items]
Revenues									20,699	17,738	9,019
Canada [Member]
Segment Reporting Information [Line Items]
Revenues									14,958	8,412	7,752
Asia and Pacific Rim [Member]
Segment Reporting Information [Line Items]
Revenues									12,873	8,967	4,524
All other [Member]
Segment Reporting Information [Line Items]
Revenues									$ 5,939	$ 6,093	$ 7,251