Note 9 - Leases (Details Textual) $ in Millions	3 Months Ended	6 Months Ended
	Apr. 30, 2024 USD ($)	Apr. 30, 2024 USD ($)
Leases
Operating Lease, Right-of-Use Asset, Statement of Financial Position	Prepaid expenses and other assets	Prepaid expenses and other assets
Operating Lease, Liability, Statement of Financial Position	Accounts payable and other liabilities	Accounts payable and other liabilities
Increase (Decrease) in Operating Lease Liability	$ 2.7	$ 3.0
Lessee, Operating Lease, Lease Not Yet Commenced		$ 3.3