Consolidated Balance Sheets (Parenthetical) (USD $) In Thousands, except Share data, unless otherwise specified	Jan. 31, 2013	Jan. 31, 2012
Statement of Financial Position [Abstract]
Allowance for doubtful accounts receivables	$ 275	$ 350
Preferred stock, par value	$ 0.01	$ 0.01
Preferred stock, shares authorized	3,000,000	3,000,000
Common stock, par value	$ 0.01	$ 0.01
Common stock, shares authorized	25,000,000	25,000,000
Common stock, shares issued	14,550,371	14,354,046
Common stock, shares outstanding	14,550,371	14,354,046