Summary Of Significant Accounting Policies (Schedule Of The Company's Interests In Land Option Agreements) (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013
Land under option agreement [Line Items]
Deposits and pre-acquisition costs	$ 115,484	$ 91,034
Remaining Purchase Price	1,644,551	1,390,286
Land, not owned, under option agreements	27,294	24,024
Consolidated and Unconsolidated VIEs [Member]
Land under option agreement [Line Items]
Deposits and pre-acquisition costs	50,248	40,486
Remaining Purchase Price	696,273	661,158
Land, not owned, under option agreements	7,483	8,167
Other Land Option Agreements Member
Land under option agreement [Line Items]
Deposits and pre-acquisition costs	65,236	50,548
Remaining Purchase Price	948,278	729,128
Land, not owned, under option agreements	$ 19,811	$ 15,857