Condensed Consolidated Statements of Cash Flows (Unaudited) - USD ($)	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
Cash Flows From Operating Activities:
Net income	$ 181,614,000	$ 185,421,000
Adjustments to reconcile net income to net cash provided by (used in) operating activities:
(Income) loss from unconsolidated joint ventures	(4,334,000)	(1,412,000)
Depreciation and amortization	27,672,000	27,428,000
Amortization of stock-based compensation	9,216,000	7,512,000
Deferred income tax provision	14,866,000	4,315,000
Other operating activities	3,104,000	97,000
Changes in cash and equivalents due to:
Mortgage loans held for sale	106,893,000	136,903,000
Inventories - owned	(178,314,000)	(271,304,000)
Inventories - not owned	(34,472,000)	(19,254,000)
Other assets	(13,043,000)	(1,758,000)
Accounts payable	(65,397,000)	24,080,000
Accrued liabilities	(47,213,000)	(28,414,000)
Net cash provided by (used in) operating activities	592,000	63,614,000
Cash Flows From Investing Activities:
Investments in unconsolidated homebuilding joint ventures	(25,002,000)	(22,592,000)
Distributions of capital from unconsolidated homebuilding joint ventures	8,045,000	8,115,000
Net cash paid for acquisitions	(44,477,000)
Other investing activities	(9,793,000)	(4,166,000)
Net cash provided by (used in) investing activities	(71,227,000)	(18,643,000)
Cash Flows From Financing Activities:
Change in restricted cash	(3,711,000)	6,063,000
Borrowings from revolving credit facility	264,450,000	693,700,000
Principal payments on revolving credit facility	(264,450,000)	(693,700,000)
Principal payments on secured project debt and other notes payable	(615,000)	(10,169,000)
Principal payment on senior notes payable	(230,000,000)
Proceeds from the issuance of senior notes payable	579,125,000	300,000,000
Payment of debt issuance costs	(4,595,000)	(2,195,000)
Net proceeds from (payments on) mortgage credit facility	(97,599,000)	(128,908,000)
Repurchases of common stock	(150,014,000)	(99,829,000)
Common stock dividend payments	(9,019,000)	(9,527,000)
Issuance of common stock under employee stock plans, net of tax withholdings	(5,303,000)	1,069,000
Other financing activities	(67,000)	(199,000)
Net cash provided by (used in) financing activities	78,202,000	56,305,000
Net increase (decrease) in cash and equivalents	7,567,000	101,276,000
Cash and equivalents at beginning of period	208,127,000	186,594,000
Cash and equivalents at end of period	215,694,000	287,870,000
Cash and Cash Equivalents, at Carrying Value	$ 208,127,000	$ 186,594,000