Business Combinations (Schedule Of Pro Forma Information) (Details) - UCP, Sundquist Homes, And WJH [Member] $ / shares in Units, $ in Thousands	9 Months Ended
	Sep. 30, 2019 USD ($) $ / shares shares
Business Acquisition [Line Items]
Total revenues	$ 1,645,858
Income before tax expense	87,092
Income tax expense	(21,773)
Net income	65,319
Less: Undistributed earnings allocated to participating securities	(54)
Numerator for basic and diluted pro forma EPS	$ 65,265
Pro forma weighted average shares-basic | shares	29,885,858
Pro forma weighted average shares-diluted | shares	30,189,058
Pro forma basic EPS | $ / shares	$ 2.18
Pro forma diluted EPS | $ / shares	$ 2.16