Note 17 - Employee Benefits Plan (Details Textual) - USD ($) $ in Millions	1 Months Ended	11 Months Ended	12 Months Ended
	Dec. 05, 2018	Oct. 31, 2019	Oct. 31, 2018
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 0.1	$ 0.8	$ 0.6
Camfaud [Member] | Small Self-Administered Scheme [Member]
Defined Benefit Plan, Plan Assets, Contributions by Employer	$ 0.1	$ 0.2	$ 0.2