Accrued Expenses and Other Liabilities (Schedule Of Accrued Expenses And Other Liabilities) (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Jun. 30, 2018	Dec. 31, 2017	Sep. 30, 2017	Jun. 30, 2017	Dec. 31, 2016
Accrued Expenses and Other Liabilities [Abstract]
Earnest money deposits	$ 18,988		$ 14,077
Warranty reserve	10,272	$ 10,269	8,531	$ 8,850	$ 3,057	$ 2,479
Accrued compensation costs	25,892		22,129
Land development and home construction accruals	96,763		61,918
Liability for product financing arrangement	13,326		19,751
Accrued interest	16,060		14,435
Income taxes payable			851
Other	9,004		8,664
Total accrued expenses and other liabilities	$ 190,305		$ 150,356