Note 9 - Mortgage Loans Held for Sale - Loan Origination Reserves (Details) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2018	Apr. 30, 2017	Apr. 30, 2018	Apr. 30, 2017
Loan origination reserves, beginning of period	$ 3,188	$ 5,077	$ 3,158	$ 8,137
Provisions for losses during the period	38	45	68	79
Adjustments to pre-existing provisions for losses from changes in estimates	45	(1,340)	45	(4,434)
Loan origination reserves, end of period	$ 3,271	$ 3,782	$ 3,271	$ 3,782