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Intangibles, Net (Details 1) (USD $)
In Thousands, unless otherwise specified
Jul. 31, 2012
Jul. 31, 2011
Intangible Assets, Net (Excluding Goodwill) [Abstract]    
2013 $ 3,499  
2014 1,186  
2015 765  
2016 543  
2017 317  
Thereafter 1,675  
Intangibles, net $ 7,985 $ 12,748