Supplemental Guarantor Information Supplemental Guarantor Information - Balance Sheet (Details) - USD ($) $ in Thousands	Sep. 30, 2018	Dec. 31, 2017
ASSETS:
Cash, cash equivalents and restricted cash	$ 36,360	$ 151,703
Mortgage loans held for sale	115,189	171,580
Inventory	1,751,525	1,414,574
Property and equipment - net	28,691	26,816
Investment in joint venture arrangements	24,568	20,525
Deferred income tax asset	16,925	18,438
Investment in subsidiaries	0	0
Intercompany	0	0
Goodwill	16,400	0
Other assets	68,677	61,135
TOTAL ASSETS	2,058,335	1,864,771
LIABILITIES:
Accounts payable	148,421	117,233
Customer deposits	40,448	26,378
Intercompany liabilities	0	0
Other liabilities	116,651	131,534
Community development district obligations	16,101	13,049
Obligation for consolidated inventory not owned	21,897	21,545
Notes payable bank - homebuilding operations	222,700	0
Notes payable bank - financial service operations	104,026	168,195
Notes payable - other	8,838	10,576
Convertible senior subordinated notes due 2018 - net	0	86,132
Senior notes due 2021 - net	297,608	296,780
Senior notes due 2025 - net	246,441	246,051
TOTAL LIABILITIES	1,223,131	1,117,473
TOTAL SHAREHOLDERS' EQUITY	835,204	747,298
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	2,058,335	1,864,771
Consolidation, Eliminations [Member]
ASSETS:
Cash, cash equivalents and restricted cash	0	0
Mortgage loans held for sale	0	0
Inventory	0	0
Property and equipment - net	0	0
Investment in joint venture arrangements	0	0
Deferred income tax asset	0	0
Investment in subsidiaries	(786,063)	(722,508)
Intercompany	(590,635)	(650,599)
Goodwill	0
Other assets	0	0
TOTAL ASSETS	(1,376,698)	(1,373,107)
LIABILITIES:
Accounts payable	0	0
Customer deposits	0	0
Intercompany liabilities	(590,635)	(650,599)
Other liabilities	0	0
Community development district obligations	0	0
Obligation for consolidated inventory not owned	0	0
Notes payable bank - homebuilding operations	0
Notes payable bank - financial service operations	0	0
Notes payable - other	0	0
Convertible senior subordinated notes due 2018 - net		0
Senior notes due 2021 - net	0	0
Senior notes due 2025 - net	0	0
TOTAL LIABILITIES	(590,635)	(650,599)
TOTAL SHAREHOLDERS' EQUITY	(786,063)	(722,508)
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	(1,376,698)	(1,373,107)
Parent Company [Member]
ASSETS:
Cash, cash equivalents and restricted cash	0	0
Mortgage loans held for sale	0	0
Inventory	0	0
Property and equipment - net	0	0
Investment in joint venture arrangements	0	0
Deferred income tax asset	0	0
Investment in subsidiaries	786,063	722,508
Intercompany	590,635	650,599
Goodwill	0
Other assets	2,555	3,154
TOTAL ASSETS	1,379,253	1,376,261
LIABILITIES:
Accounts payable	0	0
Customer deposits	0	0
Intercompany liabilities	0	0
Other liabilities	0	0
Community development district obligations	0	0
Obligation for consolidated inventory not owned	0	0
Notes payable bank - homebuilding operations	0
Notes payable bank - financial service operations	0	0
Notes payable - other	0	0
Convertible senior subordinated notes due 2018 - net		86,132
Senior notes due 2021 - net	297,608	296,780
Senior notes due 2025 - net	246,441	246,051
TOTAL LIABILITIES	544,049	628,963
TOTAL SHAREHOLDERS' EQUITY	835,204	747,298
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	1,379,253	1,376,261
Guarantor Subsidiaries [Member]
ASSETS:
Cash, cash equivalents and restricted cash	21,494	131,522
Mortgage loans held for sale	0	0
Inventory	1,751,525	1,414,574
Property and equipment - net	27,715	25,815
Investment in joint venture arrangements	22,073	13,930
Deferred income tax asset	16,925	18,438
Investment in subsidiaries	0	0
Intercompany	0	0
Goodwill	16,400
Other assets	56,215	48,430
TOTAL ASSETS	1,912,347	1,652,709
LIABILITIES:
Accounts payable	147,435	116,773
Customer deposits	40,448	26,378
Intercompany liabilities	589,507	645,048
Other liabilities	111,902	126,522
Community development district obligations	16,101	13,049
Obligation for consolidated inventory not owned	21,897	21,545
Notes payable bank - homebuilding operations	222,700
Notes payable bank - financial service operations	0	0
Notes payable - other	8,838	10,576
Convertible senior subordinated notes due 2018 - net		0
Senior notes due 2021 - net	0	0
Senior notes due 2025 - net	0	0
TOTAL LIABILITIES	1,158,828	959,891
TOTAL SHAREHOLDERS' EQUITY	753,519	692,818
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	1,912,347	1,652,709
Non-Guarantor Subsidiaries [Member]
ASSETS:
Cash, cash equivalents and restricted cash	14,866	20,181
Mortgage loans held for sale	115,189	171,580
Inventory	0	0
Property and equipment - net	976	1,001
Investment in joint venture arrangements	2,495	6,595
Deferred income tax asset	0	0
Investment in subsidiaries	0	0
Intercompany	0	0
Goodwill	0
Other assets	9,907	9,551
TOTAL ASSETS	143,433	208,908
LIABILITIES:
Accounts payable	986	460
Customer deposits	0	0
Intercompany liabilities	1,128	5,551
Other liabilities	4,749	5,012
Community development district obligations	0	0
Obligation for consolidated inventory not owned	0	0
Notes payable bank - homebuilding operations	0
Notes payable bank - financial service operations	104,026	168,195
Notes payable - other	0	0
Convertible senior subordinated notes due 2018 - net		0
Senior notes due 2021 - net	0	0
Senior notes due 2025 - net	0	0
TOTAL LIABILITIES	110,889	179,218
TOTAL SHAREHOLDERS' EQUITY	32,544	29,690
TOTAL LIABILITIES AND SHAREHOLDERS' EQUITY	$ 143,433	$ 208,908