Condensed Consolidated Balance Sheets (Parenthetical) - USD ($) $ in Thousands	May. 31, 2015	Feb. 28, 2015
Accounts receivable, allowance for doubtful accounts	$ 18	$ 52
Preferred stock, par value	$ 0	$ 0
Preferred stock, shares authorized	10,000,000	10,000,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0	$ 0
Common stock, shares authorized	50,000,000	50,000,000
Common stock, shares issued	9,732,000	9,732,000
Common stock, shares outstanding	5,894,000	5,962,000
Treasury stock, shares	3,839,000	3,770,000