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Note 6 - Warranty Costs (Details Textual) - USD ($)
$ in Thousands
 3 Months Ended 6 Months Ended
Apr. 30, 2019
Apr. 30, 2018
Apr. 30, 2019
Apr. 30, 2018
Cash Received from Subcontractors for Owner Controlled Insurance Program     $ 2,200 $ 1,900
General Liability Insurance Deductible $ 20,000 $ 20,000 20,000 20,000
Bodily Injury Insurance Deductible 250 250 250 250
Bodily Injury Insurance Limit 5,000 5,000 5,000 5,000
Aggregate Retention for Construction Defects Warranty and Bodily Injury Claims 20,000 20,000 20,000 20,000
Payments by Insurance Companies for Claims $ 100 $ 100 $ 100 $ 100