Segment Information (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2019	Sep. 30, 2018	Sep. 30, 2019	Sep. 30, 2018	Dec. 31, 2018
Segment Reporting Information [Line Items]
Entity Emerging Growth Company			false
Revenues:
Total revenues	$ 209,404	$ 152,052	$ 561,538	$ 438,527
Gross profit:
Gross Profit	44,725	36,668	120,372	110,373
Income before income taxes:
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	24,972	20,107	61,747	60,948
Inventory
Inventory	740,799		740,799		$ 668,961
Goodwill
Goodwill	680		680		$ 680
Builder operations
Revenues:
Total revenues	200,658	139,689
Gross profit:
Gross Profit	47,777	37,915	127,939	112,990
Income before income taxes:
Results of Operations, Income before Income Taxes	23,163	19,633	61,131	62,004
Builder operations | Southeast [Domain]
Revenues:
Total revenues	95,973	78,803	269,032	209,249
Gross profit:
Gross Profit	23,540	21,913	67,682	57,626
Income before income taxes:
Results of Operations, Income before Income Taxes	12,429	12,649	36,543	33,978
Goodwill
Goodwill	700		700
Builder operations | Central
Revenues:
Total revenues	104,685	60,886
Gross profit:
Gross Profit	24,237	16,002	60,257	55,364
Income before income taxes:
Results of Operations, Income before Income Taxes	10,734	6,984	24,588	28,026
Land development
Revenues:
Total revenues	8,746	12,363	24,228	27,054
Gross profit:
Gross Profit	2,300	2,142	6,202	6,591
Income before income taxes:
Results of Operations, Income before Income Taxes	4,067	1,292	8,366	4,975
Corporate and Other [Member]
Gross profit:
Other General Expense	(5,352)	(3,389)
Income before income taxes:
Income (Loss) from Continuing Operations before Income Taxes, Noncontrolling Interest	(2,258)	(818)	(7,750)	(6,031)
Real Estate, Other [Member]
Revenues:
Total revenues	9,486	12,593	24,978	31,624
Real Estate, Other [Member] | Southeast [Domain]
Revenues:
Total revenues	740	230	750	4,570
Real Estate, Other [Member] | Central
Revenues:
Total revenues	8,746	12,363	24,228	27,054
Real Estate, Other [Member] | Builder operations
Revenues:
Total revenues	700	200	800	4,600
Residential Real Estate [Member]
Revenues:
Total revenues	199,918	139,459	536,560	406,903
Residential Real Estate [Member] | Southeast [Domain]
Revenues:
Total revenues	95,233	78,573	268,282	204,679
Residential Real Estate [Member] | Central
Revenues:
Total revenues	104,685	60,886	268,278	202,224
Residential Real Estate [Member] | Land development
Revenues:
Total revenues	$ 0	$ 0	$ 0	$ 0