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Note 20 - Investments in Unconsolidated Homebuilding and Land Development Joint Ventures (Details Textual)
$ in Thousands
3 Months Ended 12 Months Ended
Oct. 31, 2018
USD ($)
Jul. 31, 2018
USD ($)
Apr. 30, 2018
USD ($)
Jan. 31, 2018
USD ($)
Oct. 31, 2017
USD ($)
Jul. 31, 2017
USD ($)
Apr. 30, 2017
USD ($)
Jan. 31, 2017
USD ($)
Oct. 31, 2018
USD ($)
Oct. 31, 2017
USD ($)
Oct. 31, 2016
USD ($)
Number of Owned Communities Transferred to the Joint Venture               1      
Number of Optioned Communities Transferred to the Joint Venture               3      
Proceeds from Transfer of Land to Joint Venture               $ 11,200      
Fair Value of Assets Acquired       $ 13,000              
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures, Total $ 123,694       $ 115,090       $ 123,694 $ 115,090  
Revenues, Total $ 614,811 $ 456,712 $ 502,544 $ 417,166 721,686 $ 592,035 $ 585,935 $ 552,009 $ 1,991,233 2,451,665 $ 2,752,247
Joint Venture Total Debt to Capitalization Ratio 45.00%               45.00%    
Joint Ventures in Northeast [Member]                      
Joint Venture Impairment Charge                 $ 700    
Joint Ventures in Mid-Atlantic [Member]                      
Joint Venture Impairment Charge                 600    
Homebuilding [Member]                      
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures, Total $ 123,694       115,090       123,694 115,090  
Revenues, Total                 1,937,878 2,392,922 2,679,630
Homebuilding [Member] | Management Fees [Member]                      
Revenues, Total                 21,100 11,300 $ 5,800
Corporate Joint Venture [Member]                      
Advances to Affiliate $ 4,600       $ 22,400       $ 4,600 $ 22,400  
Joint Venture Total Debt to Capitalization Ratio 45.00%       51.00%       45.00% 51.00%