Summary Of Significant Accounting Policies (Schedule Of The Company's Interests In Land Option Agreements) (Details) - USD ($) $ in Thousands	Sep. 30, 2015	Dec. 31, 2014
Land under option agreement [Line Items]
Deposits and Pre-acquisition Costs	$ 176,279	$ 127,280
Remaining Purchase Price	2,118,596	1,890,585
Land, Not Owned, Under Option Agreements	102,548	30,186
Land options with VIEs
Land under option agreement [Line Items]
Deposits and Pre-acquisition Costs	87,804	56,039
Remaining Purchase Price	1,098,008	891,506
Land, Not Owned, Under Option Agreements	32,305	12,533
Other Land Option Agreements Member
Land under option agreement [Line Items]
Deposits and Pre-acquisition Costs	88,475	71,241
Remaining Purchase Price	1,020,588	999,079
Land, Not Owned, Under Option Agreements	$ 70,243	$ 17,653