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SELECTED FINANCIAL STATEMENT INFORMATION SELECTED FINANCIAL STATEMENT INFORMATION (Accumulated Other Comprehensive Loss) (Details) - USD ($)
$ in Thousands
3 Months Ended 6 Months Ended
Apr. 30, 2017
Apr. 30, 2016
Apr. 30, 2017
Apr. 30, 2016
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Starting accumulated other comprehensive loss     $ (25,326)  
Unrealized gain     309  
Amortization of unrealized loss on defined benefit pension plan, net of tax $ 8 $ 0 15 $ 0
Ending accumulated other comprehensive loss (25,002)   (25,002)  
Foreign Currency Translation [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Starting accumulated other comprehensive loss     (23,953)  
Unrealized gain     309  
Ending accumulated other comprehensive loss (23,644)   (23,644)  
Pension Benefit Obligation [Member]        
Accumulated Other Comprehensive Income (Loss) [Line Items]        
Starting accumulated other comprehensive loss     (1,373)  
Amortization of unrealized loss on defined benefit pension plan, net of tax     15  
Ending accumulated other comprehensive loss $ (1,358)   $ (1,358)