Condensed Balance Sheets (Parenthetical) (Unaudited) - USD ($) $ in Thousands	May. 31, 2015	Feb. 28, 2015
Balance Sheets [Abstract]
Allowance for doubtful accounts	$ 2	$ 2
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	10,000,000	10,000,000
Common stock, shares issued	2,187,132	2,185,832
Common stock, shares outstanding	2,187,132	2,185,832
Treasury stock, shares	273,230	273,230