Note 4 - Leases (Details Textual) - USD ($) $ in Millions	12 Months Ended
	Oct. 31, 2018	Oct. 31, 2017	Oct. 31, 2016
Operating Leases, Rent Expense, Total	$ 14.4	$ 10.8	$ 12.8
Minimum [Member] | Office Leases [Member]
Lessee, Operating Lease, Term of Contract	3 years
Minimum [Member] | Model Home Leases [Member]
Lessee, Operating Lease, Term of Contract	1 year
Maximum [Member] | Office Leases [Member]
Lessee, Operating Lease, Term of Contract	5 years
Maximum [Member] | Model Home Leases [Member]
Lessee, Operating Lease, Term of Contract	3 years