Recent Accounting Standards New Accounting Standards (Details) - USD ($) $ in Thousands	Jul. 31, 2020	Oct. 31, 2019	Nov. 01, 2018
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease, right-of-use asset	$ 51,378	$ 0
Accounting Standards Update 2016-02
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Operating lease, right-of-use asset			$ 50,540
Operating lease, liability			$ 2,000