Condensed Consolidated Balance Sheets (Unaudited) (Parenthetical) (USD $)	Jul. 31, 2011	Jan. 31, 2011
Shareholders' equity:
Preferred stock, par value	$ 1.00	$ 1.00
Preferred stock, shares authorized	1,000	1,000
Preferred stock, shares issued
Preferred stock, shares outstanding
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	20,000	20,000
Common stock, shares issued	13,339	10,872
Treasury stock, shares	925	925