Note 1 - Unaudited Interim Condensed Consolidated Financial Statements (Details Textual) - USD ($) $ in Thousands	1 Months Ended
	May 31, 2020	Jan. 31, 2021	Oct. 31, 2020	Nov. 01, 2019
Operating Lease, Right-of-Use Asset		$ 1,184	$ 1,421
Operating Lease, Liability, Total		$ 1,266
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset				$ 2,300
Operating Lease, Liability, Total				$ 2,400
Paycheck Protection Program CARES Act [Member]
Proceeds from Issuance of Long-term Debt, Total	$ 2,800