Note 18 - Supplemental Guarantor Information (Details) - Condensed Consolidating Balance Sheet - USD ($) $ in Thousands	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013	Dec. 31, 2012
Homebuilding:
Cash and equivalents	$ 186,594	$ 212,393	$ 363,291	$ 346,555
Inventories:
Owned	6,069,959	3,255,204
Not owned	83,246	85,153
Investments in unconsolidated joint ventures	132,763	50,111
Deferred income taxes, net	396,194	276,402
Total Assets	8,345,505	4,151,639
Homebuilding:
Senior notes payable	3,462,016	2,108,612
Total Liabilities	4,484,069	2,474,951
Equity:
Total Stockholders' Equity	3,861,436	1,676,688
Total Liabilities and Equity	8,345,505	4,151,639
Homebuilding [Member]
Homebuilding:
Cash and equivalents	151,076	180,428
Restricted cash	35,990	38,222
Inventories:
Owned	6,069,959	3,255,204
Not owned	83,246	85,153
Investments in unconsolidated joint ventures	132,763	50,111
Deferred income taxes, net	396,194	276,402
Goodwill	933,360
Other assets	118,768	38,816
Total Assets	7,921,356	3,924,336
Homebuilding:
Accounts payable	191,681	45,085
Accrued liabilities and intercompany payables	478,793	223,783
Secured project debt and other notes payable	25,683	4,689
Senior notes payable	3,462,016	2,108,612
Total Liabilities	4,158,173	2,382,169
Financial Services [Member]
Homebuilding:
Cash and equivalents	35,518	31,965
Restricted cash	22,914	1,295
Mortgage loans held for sale, net	325,770	174,420
Mortgage loans held for investment, net	22,704	14,380
Inventories:
Other assets	17,243	5,243
Total Assets	424,149	227,303
Homebuilding:
Total Liabilities	325,896	92,782
Financial Services:
Accounts payable and other liabilities	22,474	3,369
Mortgage credit facilities	303,422	89,413
Parent Company [Member]
Homebuilding:
Cash and equivalents	6,387	133,304	175,289	154,722
Inventories:
Total Assets	8,001,295	4,106,700
Homebuilding:
Total Liabilities	4,139,859	2,430,012
Equity:
Total Stockholders' Equity	3,861,436	1,676,688
Total Liabilities and Equity	8,001,295	4,106,700
Parent Company [Member] | Homebuilding [Member]
Homebuilding:
Cash and equivalents	6,387	133,304
Intercompany receivables	2,380,899	1,637,226
Inventories:
Owned	2,524,927	1,059,197
Not owned	32,393	17,360
Investments in unconsolidated joint ventures	5,353	(1,653)
Investments in subsidiaries	1,644,453	957,933
Deferred income taxes, net	405,945	283,890
Goodwill	933,360
Other assets	67,578	19,443
Total Assets	8,001,295	4,106,700
Homebuilding:
Accounts payable	91,873	13,856
Accrued liabilities and intercompany payables	415,803	206,731
Secured project debt and other notes payable	170,167	100,813
Senior notes payable	3,462,016	2,108,612
Total Liabilities	4,139,859	2,430,012
Guarantor Subsidiaries [Member]
Homebuilding:
Cash and equivalents	112,852	1,061	494	114
Inventories:
Total Assets	2,508,439	1,275,545
Homebuilding:
Total Liabilities	1,621,002	885,124
Equity:
Total Stockholders' Equity	887,437	390,421
Total Liabilities and Equity	2,508,439	1,275,545
Guarantor Subsidiaries [Member] | Homebuilding [Member]
Homebuilding:
Cash and equivalents	112,852	1,061
Inventories:
Owned	2,304,305	1,234,233
Not owned	38,925	28,520
Investments in unconsolidated joint ventures	4,330	497
Other assets	48,027	11,234
Total Assets	2,508,439	1,275,545
Homebuilding:
Accounts payable	82,906	16,202
Accrued liabilities and intercompany payables	1,538,096	868,922
Total Liabilities	1,621,002	885,124
Non-Guarantor Subsidiaries [Member]
Homebuilding:
Cash and equivalents	67,355	78,028	$ 187,508	$ 191,719
Inventories:
Total Assets	2,025,022	1,558,550
Homebuilding:
Total Liabilities	1,268,006	991,038
Equity:
Total Stockholders' Equity	757,016	567,512
Total Liabilities and Equity	2,025,022	1,558,550
Non-Guarantor Subsidiaries [Member] | Homebuilding [Member]
Homebuilding:
Cash and equivalents	31,837	46,063
Restricted cash	35,990	38,222
Intercompany receivables	152,505	184,772
Inventories:
Owned	1,240,727	961,774
Not owned	11,928	39,273
Investments in unconsolidated joint ventures	123,080	51,267
Other assets	3,163	8,139
Total Assets	1,599,230	1,329,510
Homebuilding:
Accounts payable	16,902	15,027
Accrued liabilities and intercompany payables	903,761	783,324
Secured project debt and other notes payable	4,061	4,689
Total Liabilities	924,724	803,040
Non-Guarantor Subsidiaries [Member] | Financial Services [Member]
Homebuilding:
Cash and equivalents	35,518	31,965
Restricted cash	22,914	1,295
Mortgage loans held for sale, net	325,770	174,420
Mortgage loans held for investment, net	22,704	14,380
Inventories:
Other assets	18,886	6,980
Total Assets	425,792	229,040
Homebuilding:
Total Liabilities	343,282	187,998
Financial Services:
Accounts payable and other liabilities	39,860	18,585
Mortgage credit facilities	303,422	169,413
Consolidation, Eliminations [Member]
Inventories:
Total Assets	(4,189,251)	(2,789,156)
Homebuilding:
Total Liabilities	(2,544,798)	(1,831,223)
Equity:
Total Stockholders' Equity	(1,644,453)	(957,933)
Total Liabilities and Equity	(4,189,251)	(2,789,156)
Consolidation, Eliminations [Member] | Homebuilding [Member]
Homebuilding:
Intercompany receivables	2,533,404	(1,821,998)
Inventories:
Investments in subsidiaries	(1,644,453)	(957,933)
Deferred income taxes, net	(9,751)	(7,488)
Total Assets	(4,187,608)	(2,787,419)
Homebuilding:
Accrued liabilities and intercompany payables	(2,378,867)	(1,635,194)
Secured project debt and other notes payable	(148,545)	(100,813)
Total Liabilities	(2,527,412)	(1,736,007)
Consolidation, Eliminations [Member] | Financial Services [Member]
Inventories:
Other assets	(1,643)	(1,737)
Total Assets	(1,643)	(1,737)
Homebuilding:
Total Liabilities	(17,386)	(95,216)
Financial Services:
Accounts payable and other liabilities	$ (17,386)	(15,216)
Mortgage credit facilities		$ (80,000)