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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, 2019
USD ($)
Jul. 31, 2019
USD ($)
Apr. 30, 2019
USD ($)
Jan. 31, 2019
USD ($)
Oct. 31, 2018
USD ($)
Jul. 31, 2018
USD ($)
Apr. 30, 2018
USD ($)
Jan. 31, 2018
USD ($)
Jan. 31, 2017
USD ($)
Oct. 31, 2019
USD ($)
Oct. 31, 2018
USD ($)
Oct. 31, 2017
USD ($)
Number of Owned Communities Transferred to the Joint Venture   1             1      
Number of Optioned Communities Transferred to the Joint Venture                 3      
Proceeds from Transfer of Land to Joint Venture   $ 15,900             $ 11,200      
Number of Joint Ventures Acquired               1        
Fair Value of Assets Acquired               $ 13,000        
Investments in and Advance to Affiliates, Subsidiaries, Associates, and Joint Ventures, Total $ 127,038       $ 123,694         $ 127,038 $ 123,694  
Equity Method Investment, Other than Temporary Impairment                   900 0  
Revenues, Total $ 713,590 $ 482,041 $ 440,691 $ 380,594 614,811 $ 456,712 $ 502,544 $ 417,166   $ 2,016,916 1,991,233 $ 2,451,665
Joint Venture Total Debt to Capitalization Ratio 40.00%                 40.00%    
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 $ 127,038       123,694         $ 127,038 123,694  
Revenues, Total                   1,962,764 1,937,878 2,392,922
Homebuilding [Member] | Management Fees [Member]                        
Revenues, Total                   16,900 21,100 $ 11,300
Corporate Joint Venture [Member]                        
Advances to Affiliate $ 1,400       $ 4,600         $ 1,400 $ 4,600  
Joint Venture Total Debt to Capitalization Ratio 40.00%       45.00%         40.00% 45.00%