Consolidated Statements of Cash Flows $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)
Operating activities
Net income	$ 112,994	$ 96,455	$ 50,295
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	13,382	12,031	6,973
Stock-based compensation expense	15,316	13,743	9,542
Loss on debt extinguishment	10,832
Inventory impairment and other	4,783
Deferred income taxes	3,174	(4,155)	674
Distributions from unconsolidated subsidiaries		7,432	5,243
Equity in income of unconsolidated subsidiaries		(14,849)	(12,176)
Loss (gain) on disposition of assets	361	1,979	577
Changes in assets and liabilities:
Cash held in escrow	(10,964)	13,640	(17,679)
Accounts receivable	(13,974)	1,227	(166)
Inventories	(129,024)	(284,977)	(83,380)
Prepaid expenses and other assets	41,542	(27,255)	(16,583)
Accounts payable	(5,113)	52,560	(3,670)
Accrued expenses and other liabilities	(39,263)	(1,662)	1,405
Mortgage loans held for sale	(72,853)	(61,747)	(52,327)
Net cash used in operating activities	(68,807)	(195,578)	(111,272)
Investing activities
Purchases of property and equipment	(16,117)	(15,803)	(17,627)
Business combinations, net of acquired cash		(28,036)	(130,047)
Proceeds from sale of South Carolina operations			17,074
Investment in unconsolidated subsidiaries			(4,000)
Proceeds from sale of intangible asset	1,730
Other investing activities	104	303	154
Net cash used in investing activities	(14,283)	(43,536)	(134,446)
Financing activities
Borrowings under revolving credit facilities	1,548,500	721,000	175,000
Payments on revolving credit facilities	(1,682,300)	(518,500)	(370,000)
Proceeds from issuance senior notes	500,000		527,500
Extinguishment of senior notes due 2022	(391,942)
Principal payments on notes payable	(20,237)	(5,371)	(6,998)
Proceeds from insurance notes payable	13,719	11,839	2,320
Extinguishments of debt assumed in business combination		(94,231)	(151,919)
Debt issuance costs	(6,140)	(3,642)	(8,579)
Net proceeds from mortgage repurchase facilities	69,540	56,236	48,320
Net proceeds from issuances of common stock	79,052	30,947	98,063
Repurchases of common stock upon vesting of stock-based compensation	(3,583)	(5,484)	(5,231)
Repurchases of common stock under stock repurchase program	(1,439)	(10,952)
Net cash provided by (used in) financing activities	105,170	181,842	308,476
Net increase (decrease)	22,080	(57,272)	62,758
Cash and cash equivalents and Restricted cash, Beginning of period	36,441	93,713	30,955
Cash and cash equivalents and Restricted cash, End of period	58,521	36,441	93,713
Supplemental cash flow disclosure
Cash paid for income taxes	26,936	39,656	29,632
Cash and cash equivalents and Restricted cash
Cash and cash equivalents	55,436	32,902	88,832
Restricted cash (Note 7)	$ 3,085	$ 3,539	$ 4,881