Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2017	Mar. 31, 2016
Cash flows from operating activities:
Net income	$ 102,923	$ 65,303
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
Depreciation and amortization	5,699	5,447
Equity-based compensation expense	10,589	10,549
Contract land deposit impairments (recoveries), net	1,717	(1,303)
Gain on sale of loans, net	(23,231)	(17,022)
Mortgage loans closed	(784,928)	(688,361)
Mortgage loans sold and principal payments on mortgage loans held for sale	955,647	839,297
Distribution of earnings from unconsolidated joint ventures	2,070	3,521
Net change in assets and liabilities:
Increase in inventory	(140,334)	(254,639)
Decrease (increase) in contract land deposits	8,424	(2,353)
Increase in receivables	(736)	(4,022)
Decrease in accounts payable and accrued expenses	(37,550)	(1,382)
Increase in customer deposits	26,117	15,587
Other, net	(16,024)	(10,615)
Net cash provided by (used in) operating activities	110,383	(39,993)
Cash flows from investing activities:
Investments in and advances to unconsolidated joint ventures	(455)	(138)
Distribution of capital from unconsolidated joint ventures	2,480	4,017
Purchase of property, plant and equipment	(5,161)	(5,431)
Proceeds from the sale of property, plant and equipment	177	199
Net cash used in investing activities	(2,959)	(1,353)
Cash flows from financing activities:
Purchase of treasury stock	(85,547)	(87,101)
Distributions to partner in consolidated variable interest entity		(150)
Proceeds from the exercise of stock options	75,265	22,263
Net cash used in financing activities	(10,282)	(64,988)
Net increase (decrease) in cash and cash equivalents	97,142	(106,334)
Cash and cash equivalents, beginning of the period	396,619	425,316
Cash and cash equivalents, end of the period	493,761	318,982
Supplemental disclosures of cash flow information:
Interest paid during the period, net of interest capitalized	11,536	10,837
Income taxes paid during the period, net of refunds	$ 7,079	$ 16,516