EARNINGS PER SHARE (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands	3 Months Ended								12 Months Ended
	Feb. 28, 2017	Nov. 30, 2016	Aug. 31, 2016	May 31, 2016	Feb. 29, 2016	Nov. 30, 2015	Aug. 31, 2015	May 31, 2015	Feb. 28, 2017	Feb. 29, 2016	Feb. 28, 2015
Earnings (loss) per share:
Net income (loss)	$ (4,239)	$ (1,527)	$ 521	$ (2,659)	$ 5,506	$ 3,876	$ 3,499	$ 4,059	$ (7,904)	$ 16,940	$ 16,508
Basic weighted average number of common shares outstanding									35,917	36,448	35,784
Effect of stock options and restricted stock units computed on treasury stock method										502	746
Diluted weighted average number of common shares outstanding									35,917	36,950	36,530
Basic									$ (0.22)	$ 0.46	$ 0.46
Diluted	$ (0.12)	$ (0.04)	$ 0.01	$ (0.07)	$ 0.15	$ 0.10	$ 0.10	$ 0.11	$ (0.22)	$ 0.46	$ 0.45