New Accounting Guidance Adopted (Details) - USD ($) $ in Thousands	Jan. 31, 2020	Nov. 01, 2019	Oct. 31, 2019
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total lease liabilities	$ 42,037
Operating lease right-of-use assets	$ 41,661		$ 0
Accounting Standards Update 2016-02 [Member]
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Total lease liabilities		$ 39,300
Operating lease right-of-use assets		$ 38,900