Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
Operating activities
Net income	$ 53,212	$ 23,630
Adjustments to reconcile net income to net cash used in operating activities:
Depreciation and amortization	5,512	2,818
Stock-based compensation expense	6,323	3,921
Deferred income taxes	(989)	(1,658)
Distribution of income from unconsolidated subsidiaries	7,432	3,852
Equity in income of unconsolidated subsidiaries	(14,849)	(3,931)
(Gain) loss on disposition of assets	230	27
Changes in assets and liabilities:
Cash held in escrow	(5,897)	(5,936)
Accounts receivable	(6,199)	(2,480)
Inventories	(124,863)	(51,383)
Prepaid expenses and other assets	(2,404)	1,352
Accounts payable	22,260	(11,384)
Accrued expenses and other liabilities	(15,634)	13,102
Mortgage loans held for sale	(5,026)	(11,235)
Net cash used in operating activities	(80,892)	(39,305)
Investing activities
Purchases of property and equipment	(7,534)	(2,885)
Business combinations, net of acquired cash	(28,036)
Other investing activities	322	(2,950)
Net cash used in investing activities	(35,248)	(5,835)
Financing activities
Borrowings under revolving credit facilities	305,000	75,000
Payments on revolving credit facilities	(175,000)	(270,000)
Proceeds from issuance of senior notes		523,000
Extinguishments of debt assumed in business combination	(94,231)
Principal payments on notes payable		(2,541)
Debt issuance costs	(3,521)	(3,593)
Net proceeds from mortgage repurchase facilities	4,679	10,551
Net proceeds from issuances of common stock	14,309	24,333
Repurchases of common stock upon vesting of stock based compensation	(4,788)	(3,693)
Net cash provided by (used in) financing activities	46,448	353,057
Net increase (decrease)	(69,692)	307,917
Cash and cash equivalents and Restricted cash, Beginning of period	93,713	30,954
Cash and cash equivalents and Restricted cash, End of period	24,021	338,871
Supplemental cash flow disclosure
Cash paid for income taxes	26,323	5,257
Cash and cash equivalents and Restricted cash
Cash and cash equivalents	19,482	336,786
Restricted cash (Note 6)	4,539	2,085
Cash and cash equivalents and Restricted cash, End of period	$ 24,021	$ 338,871