Supplemental Guarantor Information (Supplemental Condensed Consolidated Balance Sheet) (Details) - USD ($) $ in Thousands	Sep. 30, 2017	Dec. 31, 2016	Sep. 30, 2016	Dec. 31, 2015
Assets
Cash and cash equivalents	$ 58,522	$ 29,450	$ 17,354	$ 29,287
Cash held in escrow	42,262	20,044
Accounts receivable	20,810	5,729
Inventories	1,352,989	857,885
Mortgage loans held for sale	30,071
Prepaid expenses and other assets	62,362	40,457
Deferred tax asset, net	6,403
Property and equipment, net	13,658	11,412
Investment in unconsolidated subsidiaries	20,677	18,275
Amortizable intangible assets, net	1,889	2,911
Goodwill	21,365	21,365
Total Assets	1,631,008	1,007,528
Liabilities:
Accounts payable	16,810	15,708
Accrued expenses and other liabilities	157,705	62,314
Deferred tax liability		1,782
Senior and other notes payable	776,016	259,088
Revolving line of credit		195,000
Mortgage repurchase facility	27,465
Total liabilities	977,996	533,892
Stockholders' equity:	653,012	473,636
Total liabilities and stockholders' equity	1,631,008	1,007,528
CCS [Member]
Assets
Cash and cash equivalents	35,881	14,637	11,679	22,002
Accounts receivable	11,306	2,980
Investment in consolidated subsidiaries	1,382,958	884,665
Prepaid expenses and other assets	2,859	14,628
Deferred tax asset, net	6,403
Property and equipment, net	2,409	1,166
Investment in unconsolidated subsidiaries	20,677	18,275
Total Assets	1,462,493	936,351
Liabilities:
Accounts payable	(17)	257
Accrued expenses and other liabilities	35,746	12,587
Deferred tax liability		1,782
Senior and other notes payable	773,752	253,089
Revolving line of credit		195,000
Total liabilities	809,481	462,715
Stockholders' equity:	653,012	473,636
Total liabilities and stockholders' equity	1,462,493	936,351
Guarantor Subsidiaries [Member]
Assets
Cash and cash equivalents	16,278	8,646	$ 5,675	$ 7,285
Cash held in escrow	41,740	20,044
Accounts receivable	9,312	2,749
Inventories	1,352,989	857,885
Prepaid expenses and other assets	59,129	25,662
Property and equipment, net	10,760	10,224
Amortizable intangible assets, net	1,889	2,911
Goodwill	21,365	21,365
Total Assets	1,513,462	949,486
Liabilities:
Accounts payable	16,707	15,575
Accrued expenses and other liabilities	121,251	49,697
Senior and other notes payable	2,264	5,999
Total liabilities	140,222	71,271
Stockholders' equity:	1,373,240	878,215
Total liabilities and stockholders' equity	1,513,462	949,486
Non Guarantor Subsidiaries [Member]
Assets
Cash and cash equivalents	6,363	6,167
Cash held in escrow	522
Accounts receivable	192
Mortgage loans held for sale	30,071
Prepaid expenses and other assets	374	167
Property and equipment, net	489	22
Total Assets	38,011	6,356
Liabilities:
Accounts payable	120	(124)
Accrued expenses and other liabilities	708	30
Mortgage repurchase facility	27,465
Total liabilities	28,293	(94)
Stockholders' equity:	9,718	6,450
Total liabilities and stockholders' equity	38,011	6,356
Elimination Entries [Member]
Assets
Investment in consolidated subsidiaries	(1,382,958)	(884,665)
Total Assets	(1,382,958)	(884,665)
Liabilities:
Stockholders' equity:	(1,382,958)	(884,665)
Total liabilities and stockholders' equity	$ (1,382,958)	$ (884,665)