Short-Term and Long-Term Debt - Liability and Equity Components of Outstanding Issues of Convertible Notes (Details) - USD ($) $ in Thousands	Oct. 31, 2017	Oct. 31, 2016	Dec. 27, 2012
Debt Instrument [Line Items]
Net Carrying Amount	$ 392,972	$ 486,303
Convertible Notes Payable | 3.75% Convertible Senior Notes due October 15, 2018 (Original)
Debt Instrument [Line Items]
Principal Balance	61,270
Unamortized Discount	0
Deferred Debt Issuance Costs	(199)
Net Carrying Amount	61,071
Net carrying amount of equity component	0
Convertible Notes Payable | 3.75% Convertible Senior Notes due October 15, 2018 (New)
Debt Instrument [Line Items]
Principal Balance	288,730
Unamortized Discount	(574)
Deferred Debt Issuance Costs	(935)
Net Carrying Amount	287,221
Net carrying amount of equity component	0
Convertible Notes Payable | 4.0% Convertible Senior Notes due December 15, 2020
Debt Instrument [Line Items]
Principal Balance	204,963
Unamortized Discount	(9,289)
Deferred Debt Issuance Costs	(957)
Net Carrying Amount	194,717
Net carrying amount of equity component	$ 43,131		$ 43,100