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Quarterly Results (unaudited) (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Nov. 30, 2015
Aug. 31, 2015
May. 31, 2015
Feb. 28, 2015
Nov. 30, 2014
Aug. 31, 2014
May. 31, 2014
Feb. 28, 2014
Nov. 30, 2015
Nov. 30, 2014
Nov. 30, 2013
Loss Contingencies [Line Items]                      
Impairment of Real Estate         $ 34,200       $ 8,030 $ 37,628 $ 391
Equity Method Investment, Realized Gain (Loss) on Disposal                     1,100
Product Warranty Accrual, Preexisting, Increase (Decrease) [1]                 (7,238) (17,471) (31,959)
Valuation Allowance, Deferred Tax Asset, Change in Amount         (825,200)       (3,400)   (20,700)
Revenues $ 985,783 $ 843,157 $ 622,969 $ 580,121 796,041 $ 589,214 $ 565,007 $ 450,687 3,032,030 2,400,949 2,097,130
Gross profits 171,482 133,099 97,631 86,739 114,765 108,931 107,595 80,561      
Pretax income (loss) 69,917 33,954 12,673 10,499 28,601 28,661 26,924 10,763 127,043 94,949 38,363
Net income (loss) $ 44,017 $ 23,254 $ 9,573 $ 7,799 $ 852,801 $ 28,361 $ 26,624 $ 10,563 $ 84,643 $ 918,349 $ 39,963
Earnings (Loss) Per Share, Diluted, in dollars per share $ 0.43 $ 0.23 $ 0.10 $ 0.08 $ 8.36 $ 0.28 $ 0.27 $ 0.12 $ 0.85 $ 9.25 $ 0.46
Earnings (Loss) Per Share, Basic, in dollars per share $ 0.48 $ 0.25 $ 0.10 $ 0.08 $ 9.25 $ 0.31 $ 0.30 $ 0.13 $ 0.92 $ 10.26 $ 0.48
Land Option Contract Abandonment [Member]                      
Loss Contingencies [Line Items]                      
Loss on Contract Termination                 $ 1,561 $ 1,803 $ 3,190
Crown Farm Investor, LLC [Domain]                      
Loss Contingencies [Line Items]                      
Equity Method Investment, Realized Gain (Loss) on Disposal               $ 3,200      
[1] As discussed below, adjustments in 2015 and 2014 were primarily comprised of the reclassification of estimated minimum probable recoveries to receivables. Adjustments in 2014 also included a reclassification of estimated minimum probable recoveries to establish a separate accrual for a water intrusion-related inquiry. Adjustments in 2013 were comprised of charges associated with water intrusion-related issues in central and southwest Florida.