Fair Value of Assets and Liabilities Measured at Fair Value on a Recurring Basis (Narrative) (Details) - USD ($) $ in Thousands	Apr. 30, 2020	Oct. 31, 2019	Dec. 23, 2015
Carrying and Estimated Fair Value [Line Items]
Loan to affiliate	$ 5,000	$ 5,000	$ 5,000

For an unclassified balance sheet, amounts due from related parties including affiliates, employees, joint ventures, officers and stockholders, immediate families thereof, and pension funds.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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-SubTopic 210
-Section S99
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Namespace Prefix:	us-gaap_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant