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Investments in Unconsolidated Entities (Details 2)
$ in Thousands
Jul. 31, 2015
USD ($)
joint_ventures
Oct. 31, 2014
USD ($)
Schedule of Equity Method Investments [Line Items]    
Number of joint ventures with loan commitments | joint_ventures 13  
Line of Credit Facility, Maximum Borrowing Capacity $ 1,130,759  
Amounts borrowed under commitments $ 661,653  
Land Development Joint Venture [Member]    
Schedule of Equity Method Investments [Line Items]    
Number of joint ventures with loan commitments | joint_ventures 3  
Line of Credit Facility, Maximum Borrowing Capacity $ 175,000  
Amounts borrowed under commitments $ 99,038  
Home Building Joint Ventures, Total [Member]    
Schedule of Equity Method Investments [Line Items]    
Number of joint ventures with loan commitments | joint_ventures 2  
Line of Credit Facility, Maximum Borrowing Capacity $ 222,000  
Amounts borrowed under commitments $ 93,584  
Rental Property Joint Ventures [Member]    
Schedule of Equity Method Investments [Line Items]    
Number of joint ventures with loan commitments | joint_ventures 8  
Line of Credit Facility, Maximum Borrowing Capacity $ 733,759  
Amounts borrowed under commitments $ 469,031