Note 1 - Unaudited Interim Condensed Consolidated Financial Statements (Details Textual) - USD ($)	1 Months Ended
	May 31, 2020	Apr. 30, 2021	Oct. 31, 2020	Nov. 01, 2019
Operating Lease, Right-of-Use Asset		$ 976,000	$ 1,421,000
Operating Lease, Liability, Total		$ 1,049,000
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset				$ 2,300,000
Operating Lease, Liability, Total				$ 2,400,000
Paycheck Protection Program CARES Act [Member]
Proceeds from Issuance of Long-term Debt, Total	$ 2,800,000