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Note 6 - Warranty Costs (Details Textual) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Jul. 31, 2020
Jul. 31, 2019
Jul. 31, 2020
Jul. 31, 2019
Oct. 31, 2019
Cash Received from Subcontractors for Owner Controlled Insurance Program $ 800 $ 1,200 $ 3,300 $ 3,400  
General Liability Insurance Deductible 20,000   20,000   $ 20,000
Bodily Injury Insurance Limit 5,000   5,000   5,000
Bodily Injury Insurance Deductible 250   250   250
Aggregate Retention for Construction Defects Warranty and Bodily Injury Claims $ 20,000   20,000   $ 20,000
Payments by Insurance Companies for Claims     $ 100 $ 100