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Significant accounting policies (Details 1) - USD ($)
$ in Thousands
3 Months Ended 9 Months Ended
Jul. 31, 2019
Jul. 31, 2018
Jul. 31, 2019
Jul. 31, 2018
Nov. 01, 2018
Nov. 02, 2017
Error Corrections and Prior Period Adjustments Restatement [Line Items]            
Retained customer deposits $ 796 $ 4,951    
Accounting Standards Update 2014-09 [Member]            
Error Corrections and Prior Period Adjustments Restatement [Line Items]            
Reclassification of Inventory to Property, Construction and Office Equipment         $ 104,807
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets         13,200  
Home Building [Member]            
Error Corrections and Prior Period Adjustments Restatement [Line Items]            
Retained customer deposits $ 2,700   $ 9,100      
Land sales prior [Member] | Accounting Standards Update 2014-09 [Member]            
Error Corrections and Prior Period Adjustments Restatement [Line Items]            
New Accounting Pronouncement or Change in Accounting Principle, Cumulative Effect of Change on Equity or Net Assets         $ 4,600