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Nature of Operations, Segment Reporting and Geographical Information (Details Textual) (USD $)
In Thousands, unless otherwise specified
12 Months Ended
Jan. 31, 2013
Segment
Jan. 31, 2012
Segment Reporting Information [Line Items]    
Goodwill assigned $ 795 $ 795
Nature of Operations, Segment Reporting and Geographical Information (Textual) [Abstract]    
Number of reporting segments 2  
Net sales accounted for greater than 10.00% 10.00%
T&M [Member]
   
Segment Reporting Information [Line Items]    
Goodwill assigned $ 700 $ 700