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Intangible Assets and Goodwill (Details 2) (USD $)
Oct. 31, 2013
Estimated annual amortization expense of intangible assets for next five years  
Nine month period ending July 31, 2014 $ 7,856,000
Fiscal 2015 10,229,000
Fiscal 2016 6,989,000
Fiscal 2017 6,413,000
Fiscal 2018 6,136,000
Fiscal 2019 $ 5,813,000