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Summary of Significant Accounting Policies (Details) - USD ($)
$ in Thousands
Jan. 31, 2020
Nov. 01, 2019
Oct. 31, 2019
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]      
Foreign currency translation items included in accumulated other comprehensive income (loss) $ (3,629)   $ (2,362)
Pension liability items included in accumulated other comprehensive income (loss) 4,618   4,753
Available for sale items included in accumulated other comprehensive income (loss) (140)   $ (140)
Operating lease ROU assets 2,302    
Operating lease liabilities $ 2,332    
ASU 2016-02      
Revenue, Initial Application Period Cumulative Effect Transition [Line Items]      
Operating lease ROU assets   $ 2,400  
Operating lease liabilities   $ 2,500