Note 7 - Commitments and Contingent Liabilities (Details Textual) $ in Millions	6 Months Ended
Apr. 30, 2026 USD ($)
Spill Fund Lawsuit [Member]
Loss Contingencies [Line Items]
Loss Contingency, Damages Sought, Value	$ 5.3

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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+ Details