Supplemental Guarantor Information Supplemental Guarantor Information - Statements of Cash Flows (Details) - USD ($) $ in Thousands	3 Months Ended
	Mar. 31, 2018	Mar. 31, 2017
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash (used in) provided by operating activities	$ (31,190)	$ (23,275)
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchase of property and equipment	(130)	(993)
Payments to Acquire Businesses, Gross	(100,763)	0
Intercompany Investing	0	0
Investment in joint venture arrangements	(1,890)	(3,197)
Net proceeds from sale of mortgage servicing rights	5,111	7,396
Net cash provided by (used in) investing activities	(97,672)	3,206
Net Cash Provided by (Used in) Financing Activities [Abstract]
Repayments of Senior Debt	(65,941)
Proceeds from bank borrowings - homebuilding operations	233,500	162,000
Principal repayments of bank borrowings - homebuilding operations	(71,200)	(91,400)
Net repayment of bank borrowings - financial services operations	(65,484)	(45,958)
Proceeds from (principal repayments of) notes payable-other and CDD bond obligations	(565)	607
Proceeds from exercise of stock options	426	496
Intercompany Financing	0	0
Dividends paid	0	(1,219)
Net Cash Provided by (Used in) Financing Activities	30,736	24,526
Net increase (decrease) in cash and cash equivalents	(98,126)	4,457
Cash and cash equivalents balance at beginning of period	151,703	34,441
Cash and cash equivalents balance at end of period	53,577	38,898
Consolidation, Eliminations [Member]
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash (used in) provided by operating activities	(2,750)	(200)
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchase of property and equipment	0	0
Payments to Acquire Businesses, Gross	0
Intercompany Investing	3,176	(523)
Investment in joint venture arrangements	0	0
Net proceeds from sale of mortgage servicing rights	0	0
Net cash provided by (used in) investing activities	3,176	(523)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Repayments of Senior Debt	0
Proceeds from bank borrowings - homebuilding operations	0	0
Principal repayments of bank borrowings - homebuilding operations	0	0
Net repayment of bank borrowings - financial services operations	0	0
Proceeds from (principal repayments of) notes payable-other and CDD bond obligations	0	0
Proceeds from exercise of stock options	0	0
Intercompany Financing	(3,176)	523
Dividends paid	2,750	200
Net Cash Provided by (Used in) Financing Activities	(426)	723
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents balance at beginning of period	0	0
Cash and cash equivalents balance at end of period	0	0
Parent Company [Member]
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash (used in) provided by operating activities	2,750	200
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchase of property and equipment	0	0
Payments to Acquire Businesses, Gross	0
Intercompany Investing	(3,176)	523
Investment in joint venture arrangements	0	0
Net proceeds from sale of mortgage servicing rights	0	0
Net cash provided by (used in) investing activities	(3,176)	523
Net Cash Provided by (Used in) Financing Activities [Abstract]
Repayments of Senior Debt	0
Proceeds from bank borrowings - homebuilding operations	0	0
Principal repayments of bank borrowings - homebuilding operations	0	0
Net repayment of bank borrowings - financial services operations	0	0
Proceeds from (principal repayments of) notes payable-other and CDD bond obligations	0	0
Proceeds from exercise of stock options	426	496
Intercompany Financing	0	0
Dividends paid	0	(1,219)
Net Cash Provided by (Used in) Financing Activities	426	(723)
Net increase (decrease) in cash and cash equivalents	0	0
Cash and cash equivalents balance at beginning of period	0	0
Cash and cash equivalents balance at end of period	0	0
Guarantor Subsidiaries [Member]
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash (used in) provided by operating activities	(96,116)	(77,003)
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchase of property and equipment	(95)	(932)
Payments to Acquire Businesses, Gross	(100,763)
Intercompany Investing	0	0
Investment in joint venture arrangements	(1,327)	(857)
Net proceeds from sale of mortgage servicing rights	0	0
Net cash provided by (used in) investing activities	(102,185)	(1,789)
Net Cash Provided by (Used in) Financing Activities [Abstract]
Repayments of Senior Debt	(65,941)
Proceeds from bank borrowings - homebuilding operations	233,500	162,000
Principal repayments of bank borrowings - homebuilding operations	(71,200)	(91,400)
Net repayment of bank borrowings - financial services operations	0	0
Proceeds from (principal repayments of) notes payable-other and CDD bond obligations	(565)	607
Proceeds from exercise of stock options	0	0
Intercompany Financing	1,401	1,816
Dividends paid	0	0
Net Cash Provided by (Used in) Financing Activities	97,195	73,023
Net increase (decrease) in cash and cash equivalents	(101,106)	(5,769)
Cash and cash equivalents balance at beginning of period	131,522	20,927
Cash and cash equivalents balance at end of period	30,416	15,158
Non-Guarantor Subsidiaries [Member]
Net Cash Provided by (Used in) Operating Activities [Abstract]
Net cash (used in) provided by operating activities	64,926	53,728
Net Cash Provided by (Used in) Investing Activities [Abstract]
Purchase of property and equipment	(35)	(61)
Payments to Acquire Businesses, Gross	0
Intercompany Investing	0	0
Investment in joint venture arrangements	(563)	(2,340)
Net proceeds from sale of mortgage servicing rights	5,111	(7,396)
Net cash provided by (used in) investing activities	4,513	4,995
Net Cash Provided by (Used in) Financing Activities [Abstract]
Repayments of Senior Debt	0
Proceeds from bank borrowings - homebuilding operations	0	0
Principal repayments of bank borrowings - homebuilding operations	0	0
Net repayment of bank borrowings - financial services operations	(65,484)	(45,958)
Proceeds from (principal repayments of) notes payable-other and CDD bond obligations	0	0
Proceeds from exercise of stock options	0	0
Intercompany Financing	1,775	(2,339)
Dividends paid	(2,750)	(200)
Net Cash Provided by (Used in) Financing Activities	(66,459)	(48,497)
Net increase (decrease) in cash and cash equivalents	2,980	10,226
Cash and cash equivalents balance at beginning of period	20,181	13,514
Cash and cash equivalents balance at end of period	$ 23,161	$ 23,740