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Estimated amortization expense related to finite lived intangible assets (Detail) - USD ($)
$ in Thousands
Oct. 31, 2015
Oct. 31, 2014
Estimated Amortization Expense Related To Finite Lived Intangible Assets [Line Items]    
2016 $ 649  
2017 589  
2018 553  
2019 553  
2020 553  
Thereafter 1,371  
Total $ 4,268 $ 1,187