Condensed Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands	Aug. 31, 2011	Feb. 28, 2011
Current assets
Allowance for doubtful accounts receivable	$ 263	$ 134
Shareholders' Equity
Preferred stock, par value
Preferred stock, shares authorized	10,000	10,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value
Common stock, shares authorized	50,000	50,000
Common stock, shares issued	9,732	9,732
Common stock, shares outstanding	7,649	8,409
Treasury stock, shares	2,083	1,323