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Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
Jul. 31, 2012
Jan. 31, 2012
Condensed Consolidated Balance Sheets [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 13,744,598 13,661,098
Common stock, shares outstanding 13,741,365 13,657,865
Treasury stock, shares (3,233) (3,233)