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Short-Term and Long-Term Debt - Debt Components (Details) - Secured debt - 2025 Term Loan - USD ($)
$ in Thousands
Apr. 30, 2019
Oct. 31, 2018
Debt Instrument [Line Items]    
Principal Balance $ 696,500  
Unamortized Debt Discount (2,129)  
Deferred Debt Issuance Costs (3,942) $ (4,300)
Net Carrying Value 690,429 $ 693,450
Fair Value $ 696,500