EARNINGS (LOSS) PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 28, 2019	Nov. 30, 2018	Aug. 31, 2018	May 31, 2018	Feb. 28, 2018	Nov. 30, 2017	Aug. 31, 2017	May 31, 2017	Feb. 28, 2019	Feb. 28, 2018	Feb. 28, 2017
Earnings Per Share [Abstract]
Net income (loss)	$ 11,263	$ (522)	$ (854)	$ 8,511	$ (4,767)	$ 11,806	$ 12,232	$ (2,654)	$ 18,398	$ 16,617	$ (7,904)
Basic weighted average number of common shares outstanding									34,589	35,250	35,917
Effect of stock options and restricted stock units computed on treasury stock method									705	889
Diluted weighted average number of common shares outstanding									35,294	36,139	35,917
Earnings (loss) per share:
Basic									$ 0.53	$ 0.47	$ (0.22)
Diluted	$ 0.33	$ (0.02)	$ (0.02)	$ 0.23	$ (0.13)	$ 0.33	$ 0.34	$ (0.08)	$ 0.52	$ 0.46	$ (0.22)