Fair Value of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Summary of the Carrying Amounts and Estimated Fair Values of These Financial Instruments) (Details) - USD ($) $ in Thousands	Apr. 30, 2020	Oct. 31, 2019	Dec. 23, 2015
Carrying and Estimated Fair Value [Line Items]
Carrying value of loan to affiliate	$ 5,000	$ 5,000	$ 5,000
Carrying value of debt	620,930	620,513
Level 2 [Member]
Carrying and Estimated Fair Value [Line Items]
Carrying value of debt	620,930	620,513
Fair value of debt	661,087	658,615
Level 3 [Member]
Carrying and Estimated Fair Value [Line Items]
Carrying value of loan to affiliate	5,000	5,000
Fair value of loan to affiliate	$ 5,000	$ 5,000