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Estimated amortization expense related to finite lived intangible assets (Detail) - USD ($)
$ in Thousands
Oct. 31, 2018
Oct. 31, 2017
Estimated Amortization Expense Related To Finite Lived Intangible Assets [Line Items]    
2019 $ 275  
2020 275  
2021 136  
2022 89  
2023 79  
Thereafter 513  
Total $ 1,367 $ 1,642