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Notes Payable (Schedule Notes Payable) (Details) - USD ($)
$ in Thousands
Aug. 31, 2019
Feb. 01, 2019
Nov. 30, 2018
Debt Instrument [Line Items]      
Mortgages and notes payable $ 1,860,135   $ 2,060,263
Mortgages and land contracts due to land sellers and other loans      
Debt Instrument [Line Items]      
Mortgages and notes payable $ 16,856   40,038
Senior Notes [Member] | 4.75% Senior notes due May 15, 2019 [Member]      
Debt Instrument [Line Items]      
Senior notes, rate 4.75%    
Mortgages and notes payable $ 0   399,483
Senior Notes [Member] | 8.00% Senior notes due March 15, 2020 [Member]      
Debt Instrument [Line Items]      
Senior notes, rate 8.00%    
Mortgages and notes payable $ 349,044   347,790
Senior Notes [Member] | 7.00% Senior notes due December 15, 2021 [Member]      
Debt Instrument [Line Items]      
Senior notes, rate 7.00%    
Mortgages and notes payable $ 447,957   447,359
Senior Notes [Member] | 7.50% Senior notes due September 15, 2022 [Member]      
Debt Instrument [Line Items]      
Senior notes, rate 7.50%    
Mortgages and notes payable $ 348,129   347,731
Senior Notes [Member] | 7.625% Senior notes due May 15, 2023 [Member]      
Debt Instrument [Line Items]      
Senior notes, rate 7.625%    
Mortgages and notes payable $ 351,860   248,074
Senior Notes [Member] | 6.875% Senior notes due June 15, 2027 [Member]      
Debt Instrument [Line Items]      
Senior notes, rate 6.875%    
Mortgages and notes payable $ 296,289   0
Convertible Notes Payable [Member] | 1.375% Convertible senior notes due February 1, 2019 [Member]      
Debt Instrument [Line Items]      
Senior notes, rate   1.375%  
Mortgages and notes payable 0 $ 230,000 229,788
Revolving Credit Facility [Member] | Line of Credit [Member]      
Debt Instrument [Line Items]      
Mortgages and notes payable $ 50,000   $ 0