Note 1 - Unaudited Interim Condensed Consolidated Financial Statements (Details Textual) - USD ($)		1 Months Ended
	May 05, 2020	May 31, 2020	Apr. 30, 2020	Nov. 01, 2019	Oct. 31, 2019
Operating Lease, Right-of-Use Asset			$ 1,901,000
Operating Lease, Liability, Total			$ 2,000,000
Accounting Standards Update 2016-02 [Member]
Operating Lease, Right-of-Use Asset				$ 2,300,000
Operating Lease, Liability, Total				$ 2,400,000
Subsequent Event [Member]
Proceeds from Paycheck Protection Program Under CARES Act	$ 2,800,000	$ 2,800,000