Business Combinations (Schedule Of Pro Forma Information) (Details) - UCP, Sundquist Homes, And WJH [Member] - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2018
Business Acquisition [Line Items]
Total revenues	$ 604,120	$ 1,084,131
Income before tax expense	43,912	63,184
Income tax expense	(10,978)	(15,795)
Net income	32,934	47,389
Less: Undistributed earnings allocated to participating securities	(3)	(59)
Numerator for basic and diluted pro forma EPS	$ 32,931	$ 47,330
Pro forma weighted average shares-basic	29,901,791	29,709,728
Pro forma weighted average shares-diluted	30,170,689	30,003,276
Pro forma basic EPS	$ 1.10	$ 1.59
Pro forma diluted EPS	$ 1.09	$ 1.58