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Condensed Consolidated Balance Sheets (Parenthetical) (USD $)
Apr. 30, 2013
Jan. 31, 2013
Condensed Consolidated Balance Sheets [Abstract]    
Property, plant and equipment, net of accumulated depreciation $ 3,248,000 $ 5,309,000
Preferred stock, par value $ 0.10 $ 0.10
Preferred stock, shares authorized 500,000 500,000
Preferred stock, shares issued      
Preferred stock, shares outstanding      
Common stock, par value $ 0.15 $ 0.15
Common stock, shares authorized 30,000,000 30,000,000
Common stock, shares issued 13,977,560 13,977,560
Common stock, shares outstanding 13,974,327 13,974,327
Treasury stock, shares 3,233 3,233