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Goodwill and Other Intangible Assets (Details 1) (USD $)
In Thousands, unless otherwise specified
Jul. 31, 2013
Jan. 31, 2013
Amortization expense related to amortizable intangible assets    
2014 $ 326  
2015 653  
2016 653  
2017 653  
2018 653  
2019 and thereafter 649  
Net Carrying Amount $ 3,587 $ 3,989