Note 18 - Supplemental Guarantor Information (Details) - Condensed Consolidating Statements of Operations - USD ($) $ in Thousands	3 Months Ended								12 Months Ended
	Dec. 31, 2015	Sep. 30, 2015	Jun. 30, 2015	Mar. 31, 2015	Dec. 31, 2014	Sep. 30, 2014	Jun. 30, 2014	Mar. 31, 2014	Dec. 31, 2015		Dec. 31, 2014		Dec. 31, 2013
Homebuilding:
Revenues									$ 3,496,411		$ 2,411,178		$ 1,914,609
Cost of sales									(2,719,940)		(1,792,795)		(1,445,413)
Gross margin	$ 330,669	$ 159,756	$ 171,941	$ 114,105	$ 182,433	$ 159,060	$ 157,940	$ 118,950	776,471	[1]	618,383	[1]	469,196
Selling, general and administrative expenses									(390,710)		(275,861)		(230,691)
Income (loss) from unconsolidated joint ventures									1,966		(668)		949
Interest income (expense), net									0		0		0
Other income (expense									(62,177)		(1,733)		6,815
Homebuilding pretax income									325,550		340,121		246,269
Financial Services:
Financial services pretax income									16,939		9,843		11,429
Income before taxes									342,489		349,964		257,698
Provision for income taxes									(128,980)		(134,099)		(68,983)
Net income	$ 77,529	$ 47,177	$ 57,198	$ 31,605	$ 64,644	$ 56,599	$ 56,463	$ 38,159	213,509	[1]	215,865	[1]	188,715
Consolidation, Eliminations [Member]
Homebuilding:
Revenues									(26,722)
Cost of sales									26,722
Equity income of subsidiaries									(201,261)		(155,943)		(81,140)
Homebuilding pretax income									(201,261)		(155,943)		(81,140)
Financial Services:
Income before taxes									(201,261)		(155,943)		(81,140)
Net income									(201,261)		(155,943)		(81,140)
Parent Company [Member]
Homebuilding:
Revenues									1,234,750		813,423		819,044
Cost of sales									(989,834)		(599,911)		(609,858)
Gross margin									244,916		213,512		209,186
Selling, general and administrative expenses									(145,458)		(101,020)		(94,819)
Income (loss) from unconsolidated joint ventures									540		(71)		1,369
Equity income of subsidiaries									201,261		155,943		81,140
Interest income (expense), net									12,388		13,718		16,419
Other income (expense									(57,629)		(3,954)		7,515
Homebuilding pretax income									256,018		278,128		220,810
Financial Services:
Income before taxes									256,018		278,128		220,810
Provision for income taxes									(42,509)		(62,263)		(32,095)
Net income									213,509		215,865		188,715
Guarantor Subsidiaries [Member]
Homebuilding:
Revenues									1,500,676		1,025,404		826,245
Cost of sales									(1,194,605)		(779,578)		(632,733)
Gross margin									306,071		245,826		193,512
Selling, general and administrative expenses									(185,779)		(131,068)		(111,746)
Income (loss) from unconsolidated joint ventures									269		88		(137)
Interest income (expense), net									(9,374)		(11,497)		(11,651)
Other income (expense									(2,678)		(469)		(321)
Homebuilding pretax income									108,509		102,880		69,657
Financial Services:
Income before taxes									108,509		102,880		69,657
Provision for income taxes									(49,512)		(40,469)		(23,676)
Net income									58,997		62,411		45,981
Non-Guarantor Subsidiaries [Member]
Homebuilding:
Revenues									787,707		572,351		269,320
Cost of sales									(562,223)		(413,306)		(202,822)
Gross margin									225,484		159,045		66,498
Selling, general and administrative expenses									(59,473)		(43,773)		(24,126)
Income (loss) from unconsolidated joint ventures									1,157		(685)		(283)
Interest income (expense), net									(3,014)		(2,221)		(4,768)
Other income (expense									(1,870)		2,690		(379)
Homebuilding pretax income									162,284		115,056		36,942
Financial Services:
Financial services pretax income									16,939		9,843		11,429
Income before taxes									179,223		124,899		48,371
Provision for income taxes									(36,959)		(31,367)		(13,212)
Net income									$ 142,264		$ 93,532		$ 35,159

[1] Per share amounts do not add across due to rounding differences in quarterly amounts and due to the impact of differences between the quarterly and annual weighted average share calculations.