Reconciliation of Basic Earnings (Loss) Per Share to Diluted Earnings (Loss) Per Share (Detail) - USD ($) $ / shares in Units, shares in Thousands, $ 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
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]
Net Income (Loss), Basic	$ (1,248)	$ (1,203)	$ (221)	$ (266)	$ (192)	$ (45)	$ (378)	$ (391)	$ (2,938)	$ (1,006)
Net Income (Loss), Options									0	0
Net Income (Loss), Diluted earnings per share									$ (2,938)	$ (1,006)
Average Shares Outstanding, Basic									5,890	5,891
Average Shares Outstanding, Options									0	0
Average Shares Outstanding, Diluted earnings per share									5,890	5,891
Net Income(loss) Per Share, Basic	$ (0.21)	$ (0.20)	$ (0.04)	$ (0.05)	$ (0.03)	$ (0.01)	$ (0.06)	$ (0.07)	$ (0.50)	$ (0.17)
Net Income(loss) Per Share, Options									0	0
Net Income(loss) Per Share, Diluted earnings per share	$ (0.21)	$ (0.20)	$ (0.04)	$ (0.05)	$ (0.03)	$ (0.01)	$ (0.06)	$ (0.07)	$ (0.50)	$ (0.17)