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Variable Interest Entities (Details)
$ in Thousands
Feb. 28, 2018
USD ($)
joint_venture
Nov. 30, 2017
USD ($)
joint_venture
Variable Interest Entity [Line Items]    
Number of Investments in Unconsolidated Joint Ventures | joint_venture 7 7
Cash Deposits $ 44,627 $ 64,702
Aggregate Purchase Price 929,224 1,094,087
Pre-acquisition costs related to land option contracts and other similar contracts 31,300 26,800
Letters of Credit Outstanding, Amount 36,900 37,600
Increase in inventories and accrued expenses and other liabilities $ 14,200 $ 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 $ 18,995 $ 43,171
Aggregate Purchase Price 463,115 653,858
Non-VIE Other land option contracts and other similar contracts [Member]    
Variable Interest Entity [Line Items]    
Cash Deposits 25,632 21,531
Aggregate Purchase Price $ 466,109 $ 440,229