Subsequent Events (Narrative) (Details) shares in Millions	Apr. 11, 2017 $ / shares shares
UCP, Inc [Member]
Subsequent Event [Line Items]
Merger expected closing date	Aug. 04, 2017
Common Class A [Member] | UCP, Inc [Member]
Subsequent Event [Line Items]
Conversion of stock, cash | $ / shares	$ 5.32
Century Common Stock [Member]
Subsequent Event [Line Items]
Conversion of stock, ratio	0.2309%
Shares expected to be issued in connection to merger | shares	4.2