Condensed Consolidated Balance Sheets (Parenthetical) (USD $)	Jul. 31, 2014	Jan. 31, 2014
Statement Of Financial Position [Abstract]
Preferred stock, par value	$ 0.10	$ 0.10
Preferred stock, shares authorized	500,000	500,000
Preferred stock, shares issued	0	0
Preferred stock, shares outstanding	0	0
Common stock, par value	$ 0.15	$ 0.15
Common stock, shares authorized	30,000,000	30,000,000
Common stock, shares issued	14,442,934	14,289,134
Common stock, shares outstanding	14,439,701	14,285,901
Treasury stock, shares	3,233	3,233