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Note 6 - Warranty Costs (Details Textual) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Apr. 30, 2022
Apr. 30, 2021
Apr. 30, 2022
Apr. 30, 2021
Oct. 31, 2021
Cash Received from Subcontractors for Owner Controlled Insurance Program $ 2,000 $ 1,600 $ 3,200 $ 3,000  
General Liability Insurance Deductible 25,000   25,000   $ 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 $ 25,000   25,000   $ 20,000
Payments by Insurance Companies for Claims     $ 100 $ 100