Business Combinations (Summary Of Total Consideration) (Details) - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands		9 Months Ended
	Aug. 04, 2017	Sep. 30, 2018	Sep. 30, 2017
Total cash consideration		$ 28,036	$ 77,457
UCP, Inc [Member]
UCP Shares (including noncontrolling interest)	18,085
Cash paid per share	$ 5.32
Cash consideration	$ 96,213
Cash consideration pertaining to stockholder exercising appraisal rights	3,937
Total cash consideration	$ 100,150
Exchange ratio	0.2309%
Closing price of CCS common stock	$ 25.80
Consideration attributable to common stock	$ 107,737
Total replacement award value	1,149
Total equity consideration	108,886
Total consideration in cash and equity	$ 209,036
Century Common Stock [Member] | UCP, Inc [Member]
Number of CCS shares issued	4,176