Note 12 - Commitments (Details Textual) - USD ($)	Jan. 31, 2021	Oct. 31, 2020
Lessee, Operating Lease, Renewal Term (Year)	5 years
Operating Lease, Right-of-Use Asset	$ 1,184,000	$ 1,421,000
Operating Lease, Liability, Total	1,266,000
Operating Lease, Liability, Current	789,000	$ 874,000
Finance Lease, Liability, Total	0
Other Current Liabilities [Member]
Operating Lease, Liability, Current	789,000
K and K Unlimited [Member]
Lessee, Operating Lease, Monthly Rent	$ 14,000
Minimum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	1 year
Maximum [Member]
Lessee, Operating Lease, Remaining Lease Term (Year)	3 years