Note 12 - Stock-Based Compensation (Details Textual) - USD ($) $ in Millions	6 Months Ended
Apr. 30, 2026	Apr. 30, 2025
Restricted Stock [Member]
Payment, Tax Withholding, Share-Based Payment Arrangement	$ 0.5	$ 0.6

Amount of cash outflow to satisfy grantee's tax withholding obligation for award under share-based payment arrangement.

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 15
-Subparagraph (a)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-15

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Balance Type:	credit
Period Type:	duration