Consolidated Statements of Cash Flows - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Cash flows from operating activities:
Net income	$ 382,927	$ 281,630	$ 266,477
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization	21,534	17,614	13,391
Excess income tax benefit from equity-based compensation	(23,311)	(9,437)	(20,636)
Equity-based compensation expense	54,091	63,227	34,296
Contract land deposit recoveries	(11,058)	(225)	(5,313)
Gain on sale of loans	(67,891)	(47,791)	(56,528)
Deferred tax expense (benefit)	1,902	(4,176)	(16,848)
Mortgage loans closed	(3,111,413)	(2,469,876)	(2,307,796)
Mortgage loans sold and principal payments on mortgage loans held for sale	3,059,889	2,525,706	2,338,701
Distribution of earnings from unconsolidated joint ventures	15,511	8,431	5,676
Net change in assets and liabilities:
Increase in inventory	(134,803)	(127,729)	(52,861)
Increase in contract land deposits	(37,561)	(57,566)	(40,034)
Increase in receivables	(1,527)	(533)	(260)
Increase in accounts payable and accrued expenses	55,404	60	113,121
Increase in customer deposits	4,210	5,733	1,335
Other, net	(4,513)	(519)	(2,499)
Net cash provided by operating activities	203,391	184,549	270,222
Cash flows from investing activities:
Investments in and advances to unconsolidated joint ventures	(1,917)		(22,850)
Distribution of capital from unconsolidated joint ventures	18,489	11,569	6,782
Purchase of property, plant and equipment	(18,277)	(31,672)	(19,016)
Proceeds from the sale of property, plant and equipment	683	1,021	607
Net cash used in investing activities	(1,022)	(19,082)	(34,477)
Cash flows from financing activities:
Purchase of treasury stock	(431,367)	(567,544)	(554,491)
Net repayments under note payable and credit lines		(115)	(642)
Repayments under non-recourse debt related to consolidated variable interest entity	(64)	(3,301)	(4,314)
Borrowings under non-recourse debt related to consolidated variable interest entity			3,105
Distributions to partner in consolidated variable interest entity	(300)	(931)	(1,250)
Excess income tax benefit from equity-based compensation	23,311	9,437	20,636
Proceeds from the exercise of stock options	85,948	76,153	13,957
Net cash used in financing activities	(322,472)	(486,301)	(522,999)
Net decrease in cash and cash equivalents	(120,103)	(320,834)	(287,254)
Cash and cash equivalents, beginning of the year	545,419	866,253	1,153,507
Cash and cash equivalents, end of the year	425,316	545,419	866,253
Supplemental disclosures of cash flow information:
Interest paid during the year, net of interest capitalized	24,546	24,464	24,876
Income taxes paid during the year, net of refunds	$ 194,670	$ 181,840	$ 113,224