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Variable Interest Entities (Details)
$ in Thousands
Aug. 31, 2018
USD ($)
joint_venture
Nov. 30, 2017
USD ($)
joint_venture
Variable Interest Entity [Line Items]    
Number of Investments in Unconsolidated Joint Ventures | joint_venture 6 7
Cash Deposits $ 48,776 $ 64,702
Aggregate Purchase Price 1,377,349 1,094,087
Pre-acquisition costs related to land option contracts and other similar contracts 42,300 26,800
Letters of Credit Outstanding, Amount 37,700 37,600
Increase in inventories and accrued expenses and other liabilities $ 26,100 $ 5,700
Variable Interest Entity, Not Primary Beneficiary [Member]    
Variable Interest Entity [Line Items]    
Number of Investments in Unconsolidated Joint Ventures | joint_venture 1 1
Cash Deposits $ 19,983 $ 43,171
Aggregate Purchase Price 852,560 653,858
Non-VIE Other land option contracts and other similar contracts [Member]    
Variable Interest Entity [Line Items]    
Cash Deposits 28,793 21,531
Aggregate Purchase Price $ 524,789 $ 440,229