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Intangibles, Net (Details 1) (USD $)
In Thousands, unless otherwise specified
Jul. 31, 2013
Jul. 31, 2012
Intangible Assets, Net (Excluding Goodwill) [Abstract]    
2014 $ 4,266  
2015 3,958  
2016 3,307  
2017 2,399  
2018 1,769  
Thereafter 2,007  
Intangibles, net $ 17,706 $ 7,985