Supplemental Guarantor Information Supplemental Guarantor Information - Statements of Cash Flows (Details) - USD ($) $ in Thousands	6 Months Ended	12 Months Ended
	Jun. 30, 2013	Dec. 31, 2018	Dec. 31, 2017	Dec. 31, 2016
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash (used in) provided by operating activities		$ (2,592)	$ (53,184)	$ 34,197
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchase of property and equipment		(8,141)	(8,799)	(13,106)
Acquisition, net of cash acquired		(100,960)	0	0
Net proceeds from sale of mortgage servicing rights		6,335	8,212	0
Intercompany Investing		0	0	0
Investment in joint venture arrangements		(31,867)	(12,088)	(21,746)
Return of capital from joint venture arrangements		676	3,518	3,207
Net cash provided by (used in) investing activities		(133,957)	(9,157)	(31,645)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Redemption of preferred shares	$ (50,352)		(50,420)
Proceeds from issuance of senior notes			250,000
Proceeds from issuance of convertible senior subordinated notes		(65,941)	0	0
Proceeds from bank borrowings - homebuilding operations		666,600	398,300	351,500
Repayments of bank borrowings - homebuilding operations		(549,200)	(438,600)	(355,000)
Net proceeds from bank borrowings - financial services operations		(15,027)	15,300	29,247
Proceeds from (principal repayment of) notes payable-other and community development district bond obligations		(4,638)	4,161	(2,026)
Dividends paid on preferred shares		0	(3,656)	(4,875)
Payments for Repurchase of Common Stock		(25,709)	0	0
Redemption of preferred shares		0	(50,420)	0
Intercompany financing		0	0	0
Debt issue costs		(248)	(6,707)	(240)
Proceeds from exercise of stock options		538	11,225	182
Net cash provided by (used in) financing activities		6,375	179,603	18,788
Net increase (decrease) in cash, cash equivalents and restricted cash		(130,174)	117,262	21,340
Cash, cash equivalents and restricted cash balance at beginning of period		151,703	34,441	13,101
Cash, cash equivalents and restricted cash balance at end of period		21,529	151,703	34,441
Consolidation, Eliminations [Member]
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash (used in) provided by operating activities		(12,185)	(15,581)	(11,653)
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchase of property and equipment		0	0	0
Acquisition, net of cash acquired		0
Net proceeds from sale of mortgage servicing rights		0	0
Intercompany Investing		(12,986)	27,270	6,960
Investment in joint venture arrangements		0	0	0
Return of capital from joint venture arrangements		0	0	0
Net cash provided by (used in) investing activities		(12,986)	(27,270)	6,960
Net Cash Provided by (Used in) Financing Activities [Abstract]
Redemption of preferred shares			0
Proceeds from issuance of senior notes			0
Proceeds from issuance of convertible senior subordinated notes		0
Proceeds from bank borrowings - homebuilding operations		0	0	0
Repayments of bank borrowings - homebuilding operations		0	0	0
Net proceeds from bank borrowings - financial services operations		0	0	0
Proceeds from (principal repayment of) notes payable-other and community development district bond obligations		0	0	0
Dividends paid on preferred shares		12,185	15,581	11,653
Payments for Repurchase of Common Stock		0
Intercompany financing		12,986	27,270	991
Debt issue costs		0	0	0
Proceeds from exercise of stock options		0	0	0
Net cash provided by (used in) financing activities		25,171	42,851	12,644
Net increase (decrease) in cash, cash equivalents and restricted cash		0	0	7,951
Cash, cash equivalents and restricted cash balance at beginning of period		0	0	(7,951)
Cash, cash equivalents and restricted cash balance at end of period		0	0	0
Parent Company [Member]
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash (used in) provided by operating activities		12,185	15,581	11,653
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchase of property and equipment		0	0	0
Acquisition, net of cash acquired		0
Net proceeds from sale of mortgage servicing rights		0	0
Intercompany Investing		12,986	(27,270)	(6,960)
Investment in joint venture arrangements		0	0	0
Return of capital from joint venture arrangements		0	0	0
Net cash provided by (used in) investing activities		12,986	27,270	(6,960)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Redemption of preferred shares			(50,420)
Proceeds from issuance of senior notes			0
Proceeds from issuance of convertible senior subordinated notes		0
Proceeds from bank borrowings - homebuilding operations		0	0	0
Repayments of bank borrowings - homebuilding operations		0	0	0
Net proceeds from bank borrowings - financial services operations		0	0	0
Proceeds from (principal repayment of) notes payable-other and community development district bond obligations		0	0	0
Dividends paid on preferred shares		0	(3,656)	(4,875)
Payments for Repurchase of Common Stock		(25,709)
Intercompany financing		0	0	0
Debt issue costs		0	0	0
Proceeds from exercise of stock options		538	11,225	182
Net cash provided by (used in) financing activities		(25,171)	(42,851)	(4,693)
Net increase (decrease) in cash, cash equivalents and restricted cash		0	0	0
Cash, cash equivalents and restricted cash balance at beginning of period		0	0	0
Cash, cash equivalents and restricted cash balance at end of period		0	0	0
Guarantor Subsidiaries [Member]
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash (used in) provided by operating activities		(25,882)	(63,922)	42,572
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchase of property and equipment		(7,896)	(8,535)	(12,505)
Acquisition, net of cash acquired		(100,960)
Net proceeds from sale of mortgage servicing rights		0	0
Intercompany Investing		0	0	0
Investment in joint venture arrangements		(30,588)	(6,117)	(13,764)
Return of capital from joint venture arrangements		0	0	0
Net cash provided by (used in) investing activities		(139,444)	(14,652)	(26,269)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Redemption of preferred shares			0
Proceeds from issuance of senior notes			250,000
Proceeds from issuance of convertible senior subordinated notes		(65,941)
Proceeds from bank borrowings - homebuilding operations		666,600	398,300	351,500
Repayments of bank borrowings - homebuilding operations		(549,200)	(438,600)	(355,000)
Net proceeds from bank borrowings - financial services operations		0	0	0
Proceeds from (principal repayment of) notes payable-other and community development district bond obligations		(4,638)	4,161	(2,026)
Dividends paid on preferred shares		0	0	0
Payments for Repurchase of Common Stock		0
Intercompany financing		(7,388)	(18,143)	7,407
Debt issue costs		(75)	(6,549)	(153)
Proceeds from exercise of stock options		0	0	0
Net cash provided by (used in) financing activities		39,358	189,169	1,728
Net increase (decrease) in cash, cash equivalents and restricted cash		(125,968)	110,595	18,031
Cash, cash equivalents and restricted cash balance at beginning of period		131,522	20,927	2,896
Cash, cash equivalents and restricted cash balance at end of period		5,554	131,522	20,927
Non-Guarantor Subsidiaries [Member]
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash (used in) provided by operating activities		23,290	10,738	(8,375)
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchase of property and equipment		(245)	(264)	(601)
Acquisition, net of cash acquired		0
Net proceeds from sale of mortgage servicing rights		6,335	8,212
Intercompany Investing		0	0	0
Investment in joint venture arrangements		(1,279)	(5,971)	(7,982)
Return of capital from joint venture arrangements		676	3,518	3,207
Net cash provided by (used in) investing activities		5,487	5,495	(5,376)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Redemption of preferred shares			0
Proceeds from issuance of senior notes			0
Proceeds from issuance of convertible senior subordinated notes		0
Proceeds from bank borrowings - homebuilding operations		0	0	0
Repayments of bank borrowings - homebuilding operations		0	0	0
Net proceeds from bank borrowings - financial services operations		(15,027)	15,300	29,247
Proceeds from (principal repayment of) notes payable-other and community development district bond obligations		0	0	0
Dividends paid on preferred shares		(12,185)	(15,581)	(11,653)
Payments for Repurchase of Common Stock		0
Intercompany financing		(5,598)	(9,127)	(8,398)
Debt issue costs		(173)	(158)	(87)
Proceeds from exercise of stock options		0	0	0
Net cash provided by (used in) financing activities		(32,983)	(9,566)	9,109
Net increase (decrease) in cash, cash equivalents and restricted cash		(4,206)	6,667	(4,642)
Cash, cash equivalents and restricted cash balance at beginning of period		20,181	13,514	18,156
Cash, cash equivalents and restricted cash balance at end of period		$ 15,975	$ 20,181	$ 13,514