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Other Intangible Assets (Schedule Of Estimated Future Amortization Expense) (Details) (USD $)
In Thousands, unless otherwise specified
Jul. 31, 2013
Jan. 31, 2013
Jul. 31, 2012
Jul. 31, 2011
Other Intangible Assets [Abstract]        
2013   $ 295    
2014   587    
2015   506    
2016   485    
2017   414    
Thereafter   2,107    
Total amortization expense $ 4,394 $ 4,394 $ 1,439 $ 2,041