Note 2 - Stock Compensation (Details Textual) - USD ($) $ in Millions	3 Months Ended	9 Months Ended
Jul. 31, 2019	Jul. 31, 2018	Jul. 31, 2019	Jul. 31, 2018
Share-based Payment Arrangement, Expense		$ 0.6	$ 0.2	$ 2.7
Allocated Share Based Compensation, Income	$ 1.0
Share-based Payment Arrangement, Option [Member]
Share-based Payment Arrangement, Expense	$ 0.4	$ 0.9	$ 0.7	$ 1.1

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
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Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
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Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 718
-SubTopic 10
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