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Equipment and Leasehold Improvements (Details) - USD ($)
$ in Thousands
12 Months Ended
Oct. 31, 2019
Oct. 31, 2018
Oct. 31, 2017
Equipment and Leasehold Improvements [Abstract]      
Equipment $ 97,366 $ 95,802  
Leasehold improvements 68,386 59,234  
Subtotal 165,752 155,036  
Accumulated depreciation and amortization (92,954) (102,608)  
Equipment and leasehold improvements, net 72,798 52,428  
Depreciation and amortization expense $ 17,600 $ 15,000 $ 9,100