Note 6 - Warranty Costs (Details Textual) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Apr. 30, 2021	Apr. 30, 2020	Apr. 30, 2021	Apr. 30, 2020	Oct. 31, 2020
Cash Received from Subcontractors for Owner Controlled Insurance Program	$ 1,600	$ 1,100	$ 3,000	$ 2,400
General Liability Insurance Deductible	20,000		20,000		$ 20,000
Bodily Injury Insurance Deductible	250		250		250
Bodily Injury Insurance Limit	5,000		5,000		5,000
Aggregate Retention for Construction Defects Warranty and Bodily Injury Claims	$ 20,000		20,000		$ 20,000
Payments by Insurance Companies for Claims			$ 100	$ 100