Reporting Segments (Schedule Of Segment Reporting Information) (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2016	Sep. 30, 2015	Sep. 30, 2016	Sep. 30, 2015	Dec. 31, 2015
Segment Reporting Information [Line Items]
Total revenue	$ 253,413	$ 182,732	$ 697,151	$ 528,224
Total income before income tax expense	19,731	15,945	51,257	39,900
Total assets	1,001,371		1,001,371		$ 917,741
Atlanta [Member]
Segment Reporting Information [Line Items]
Total revenue	82,334	61,175	237,323	188,075
Total income before income tax expense	7,848	4,195	21,827	13,999
Total assets	239,202		239,202		185,331
Central Texas [Member]
Segment Reporting Information [Line Items]
Total revenue	21,376	19,186	74,425	52,759
Total income before income tax expense	429	463	4,541	3,713
Total assets	118,665		118,665		117,037
Colorado [Member]
Segment Reporting Information [Line Items]
Total revenue	95,278	60,566	262,148	191,694
Total income before income tax expense	14,490	9,806	38,279	27,325
Total assets	317,495		317,495		313,653
Houston [Member]
Segment Reporting Information [Line Items]
Total revenue	8,660	9,354	31,754	26,844
Total income before income tax expense	(717)	(59)	(2,403)	(713)
Total assets	29,151		29,151		51,534
Nevada [Member]
Segment Reporting Information [Line Items]
Total revenue	45,398	32,451	91,134	68,852
Total income before income tax expense	4,872	5,108	9,479	9,878
Total assets	250,408		250,408		220,209
Utah [Member]
Segment Reporting Information [Line Items]
Total revenue	367		367
Total income before income tax expense	(367)		(524)
Total assets	10,635		10,635
Corporate [Member]
Segment Reporting Information [Line Items]
Total income before income tax expense	(6,824)	$ (3,568)	(19,942)	$ (14,302)
Total assets	$ 35,815		$ 35,815		$ 29,977