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Summary Of Significant Accounting Policies (Schedule Of The Company's Interests In Land Option Agreements) (Details) (USD $)
In Thousands, unless otherwise specified
Sep. 30, 2014
Dec. 31, 2013
Land under option agreement [Line Items]    
Deposits and pre-acquisition costs $ 122,883 $ 91,034
Remaining Purchase Price 1,741,298 1,390,286
Land, not owned, under option agreements 16,817 24,024
Consolidated and Unconsolidated VIEs [Member]
    
Land under option agreement [Line Items]    
Deposits and pre-acquisition costs 58,197 40,486
Remaining Purchase Price 771,593 661,158
Land, not owned, under option agreements 6,719 8,167
Other Land Option Agreements Member
    
Land under option agreement [Line Items]    
Deposits and pre-acquisition costs 64,686 50,548
Remaining Purchase Price 969,705 729,128
Land, not owned, under option agreements $ 10,098 $ 15,857