Consolidated Statements of Cash Flows $ in Thousands	12 Months Ended
	Dec. 31, 2018 USD ($)	Dec. 31, 2017 USD ($)	Dec. 31, 2016 USD ($)
Operating activities
Net income	$ 96,455	$ 50,295	$ 49,540
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	12,031	6,973	5,580
Stock-based compensation expense	13,743	9,542	6,657
Deferred income taxes	(4,155)	674	1,507
Distributions from unconsolidated subsidiaries	7,432	5,243
Equity in income of unconsolidated subsidiaries	(14,849)	(12,176)	(191)
(Gain) loss on disposition of assets	1,979	577	(446)
Changes in assets and liabilities:
Cash held in escrow	13,640	(17,679)	(8,227)
Accounts receivable	1,227	(166)	(488)
Inventories	(284,977)	(83,380)	(91,859)
Prepaid expenses and other assets	(27,255)	(16,583)	(12,275)
Accounts payable	52,560	(3,670)	4,657
Accrued expenses and other liabilities	(1,662)	1,405	854
Mortgage loans held for sale	(61,747)	(52,327)
Net cash used in operating activities	(195,578)	(111,272)	(44,691)
Investing activities
Purchases of property and equipment	(15,803)	(17,627)	(7,762)
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)	(17,000)
Other investing activities	303	154	1,561
Net cash used in investing activities	(43,536)	(134,446)	(23,201)
Financing activities
Borrowings under revolving credit facilities	721,000	175,000	220,000
Payments on revolving credit facilities	(518,500)	(370,000)	(160,000)
Proceeds from issuance of senior notes		527,500
Proceeds from insurance notes payable	11,839	2,320	11,612
Extinguishments of debt assumed in business combination	(94,231)	(151,919)
Principal payments on notes payable	(5,371)	(6,998)	(9,217)
Debt issuance costs	(3,642)	(8,579)	(1,156)
Net proceeds from mortgage repurchase facilities	56,236	48,320
Net proceeds from issuances of common stock	30,947	98,063	11,369
Repurchases of common stock upon vesting of stock based compensation	(5,484)	(5,231)	(1,015)
Repurchases of common stock under our stock repurchase program	(10,952)		(2,393)
Net cash provided by (used in) financing activities	181,842	308,476	69,200
Net increase (decrease)	(57,272)	62,758	1,308
Cash and cash equivalents and Restricted cash, Beginning of period	93,713	30,955	29,647
Cash and cash equivalents and Restricted cash, End of period	36,441	93,713	30,955
Supplemental cash flow disclosure
Cash paid for income taxes	39,656	29,632	23,467
Cash and cash equivalents and Restricted cash
Cash and cash equivalents	32,902	88,832	29,450
Restricted cash (Note 8)	3,539	4,881	1,505
Cash and cash equivalents and Restricted cash, End of period	$ 36,441	$ 93,713	$ 30,955