Reporting Segments (Schedule Of Segment Reporting Information) (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2017 USD ($)	Jun. 30, 2016 USD ($)	Jun. 30, 2017 USD ($) segment	Jun. 30, 2016 USD ($)	Dec. 31, 2016 USD ($)
Segment Reporting Information [Line Items]
Number of operating segments | segment			7
Total revenue	$ 291,824	$ 259,642	$ 520,140	$ 443,738
Total income (loss) before income tax expense	23,109	19,097	35,160	31,526
Total assets	1,405,506		1,405,506		$ 1,007,528
Atlanta [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	81,466	90,467	156,856	154,989
Total income (loss) before income tax expense	5,308	8,729	11,224	13,979
Total assets	290,644		290,644		262,448
Central Texas [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	36,717	23,925	63,445	53,049
Total income (loss) before income tax expense	3,223	1,936	5,921	4,112
Total assets	125,920		125,920		112,612
Charlotte [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total income (loss) before income tax expense	(516)		(616)
Total assets	20,064		20,064		4,907
Colorado [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	106,986	98,024	192,577	166,870
Total income (loss) before income tax expense	16,040	12,946	27,694	23,789
Total assets	286,834		286,834		293,467
Houston [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	7,633	15,619	11,795	23,094
Total income (loss) before income tax expense	(811)	(892)	(1,680)	(1,686)
Total assets	37,274		37,274		25,780
Nevada [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	48,501	31,607	83,002	45,736
Total income (loss) before income tax expense	5,621	3,740	9,323	4,607
Total assets	234,043		234,043		231,057
Utah [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	8,778		10,722
Total income (loss) before income tax expense	251	(157)	19	(157)
Total assets	43,580		43,580		17,133
Financial Services [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total revenue	1,743		1,743
Total income (loss) before income tax expense	57		(697)
Total assets	18,448		18,448
Corporate [Member] | Operating Segments [Member]
Segment Reporting Information [Line Items]
Total income (loss) before income tax expense	(6,064)	$ (7,205)	(16,028)	$ (13,118)
Total assets	$ 348,699		$ 348,699		$ 60,124