Supplemental Guarantor Information (Details 5) - USD ($) $ in Thousands		3 Months Ended		6 Months Ended
		Jun. 30, 2015	Jun. 30, 2014	Jun. 30, 2015	Jun. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss) from continuing operations		$ 42,602	$ 32,042	$ 69,059	$ 55,569
Adjustments to reconcile net income to net cash (used for) provided by operating activities:				23,032	21,193
Changes in assets and liabilities				(213,312)	(181,961)
Other operating activities, net				(3,182)	(992)
Net cash used for operating activities from continuing operations				(124,403)	(106,191)
CASH FLOWS FROM INVESTING ACTIVITIES
Return of investment in unconsolidated joint ventures, net				366	366
Additions to property, plant and equipment				(14,391)	(9,875)
Purchases of marketable securities, available-for-sale				(631)	(239,115)
Proceeds from sales and maturities of marketable securities, available-for-sale				880	340,957
Net cash (used for) provided by investing activities from continuing operations				(13,776)	92,333
CASH FLOWS FROM FINANCING ACTIVITIES
Decrease in debt				(126,481)	0
Decrease in borrowings against financial services credit facilities, net				(6,782)	(14,006)
Common stock dividends and stock-based compensation				13,629	20,243
Decrease in restricted cash				17,443	(5,635)
Intercompany balances				0	0
Other financing activities, net				(845)	(531)
Net cash (used for) provided by financing activities from continuing operations				(103,036)	71
Net decrease in cash and cash equivalents from continuing operations				(241,215)	(13,787)
Cash flows from operating activities—discontinued operations				0	(27)
Cash and cash equivalents at beginning of period1	[1]			521,195	228,013
CASH AND CASH EQUIVALENTS AT END OF PERIOD		279,980	214,199	279,980	214,199
REPORTABLE LEGAL ENTITIES | TRG, INC.
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss) from continuing operations		42,602	32,042	69,059	55,569
Adjustments to reconcile net income to net cash (used for) provided by operating activities:				18,320	16,501
Changes in assets and liabilities				(170,716)	(207,804)
Other operating activities, net				(3,182)	(992)
Net cash used for operating activities from continuing operations				(86,519)	(136,726)
CASH FLOWS FROM INVESTING ACTIVITIES
Return of investment in unconsolidated joint ventures, net				366	366
Additions to property, plant and equipment				(7,709)	(6,448)
Purchases of marketable securities, available-for-sale				0	(238,315)
Proceeds from sales and maturities of marketable securities, available-for-sale				349	339,157
Net cash (used for) provided by investing activities from continuing operations				(6,994)	94,760
CASH FLOWS FROM FINANCING ACTIVITIES
Decrease in debt				(126,481)
Decrease in borrowings against financial services credit facilities, net				0	0
Common stock dividends and stock-based compensation				13,629	20,243
Decrease in restricted cash				16,116	(3,859)
Intercompany balances				187,779	19,563
Other financing activities, net				(499)	(376)
Net cash (used for) provided by financing activities from continuing operations				90,544	35,571
Net decrease in cash and cash equivalents from continuing operations				(2,969)	(6,395)
Cash flows from operating activities—discontinued operations					0
Cash and cash equivalents at beginning of period1				29,993	25,521
CASH AND CASH EQUIVALENTS AT END OF PERIOD		27,024	19,126	27,024	19,126
REPORTABLE LEGAL ENTITIES | GUARANTOR SUBSIDIARIES
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss) from continuing operations		18,780	14,931	30,017	25,624
Adjustments to reconcile net income to net cash (used for) provided by operating activities:				4,485	4,489
Changes in assets and liabilities				(86,211)	(69,021)
Other operating activities, net				0	0
Net cash used for operating activities from continuing operations				(51,709)	(38,908)
CASH FLOWS FROM INVESTING ACTIVITIES
Return of investment in unconsolidated joint ventures, net				0	0
Additions to property, plant and equipment				(6,662)	(3,380)
Purchases of marketable securities, available-for-sale				0	0
Proceeds from sales and maturities of marketable securities, available-for-sale				0	0
Net cash (used for) provided by investing activities from continuing operations				(6,662)	(3,380)
CASH FLOWS FROM FINANCING ACTIVITIES
Decrease in debt				0
Decrease in borrowings against financial services credit facilities, net				0	0
Common stock dividends and stock-based compensation				0	0
Decrease in restricted cash				0	0
Intercompany balances				(178,848)	35,680
Other financing activities, net				(288)	0
Net cash (used for) provided by financing activities from continuing operations				(179,136)	35,680
Net decrease in cash and cash equivalents from continuing operations				(237,507)	(6,608)
Cash flows from operating activities—discontinued operations					(27)
Cash and cash equivalents at beginning of period1				480,239	193,383
CASH AND CASH EQUIVALENTS AT END OF PERIOD		242,732	186,748	242,732	186,748
REPORTABLE LEGAL ENTITIES | NON-GUARANTOR SUBSIDIARIES
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss) from continuing operations		5,619	(1,171)	8,897	(2,041)
Adjustments to reconcile net income to net cash (used for) provided by operating activities:				227	203
Changes in assets and liabilities				4,701	71,281
Other operating activities, net				0	0
Net cash used for operating activities from continuing operations				13,825	69,443
CASH FLOWS FROM INVESTING ACTIVITIES
Return of investment in unconsolidated joint ventures, net				0	0
Additions to property, plant and equipment				(20)	(47)
Purchases of marketable securities, available-for-sale				(631)	(800)
Proceeds from sales and maturities of marketable securities, available-for-sale				531	1,800
Net cash (used for) provided by investing activities from continuing operations				(120)	953
CASH FLOWS FROM FINANCING ACTIVITIES
Decrease in debt				0
Decrease in borrowings against financial services credit facilities, net				(6,782)	(14,006)
Common stock dividends and stock-based compensation				0	0
Decrease in restricted cash				1,327	(1,776)
Intercompany balances				(8,931)	(55,243)
Other financing activities, net				(58)	(155)
Net cash (used for) provided by financing activities from continuing operations				(14,444)	(71,180)
Net decrease in cash and cash equivalents from continuing operations				(739)	(784)
Cash flows from operating activities—discontinued operations					0
Cash and cash equivalents at beginning of period1				10,963	9,109
CASH AND CASH EQUIVALENTS AT END OF PERIOD		10,224	8,325	10,224	8,325
GUARANTOR ELIMINATIONS
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss) from continuing operations		(24,399)	(13,760)	(38,914)	(23,583)
Adjustments to reconcile net income to net cash (used for) provided by operating activities:				0	0
Changes in assets and liabilities				38,914	23,583
Other operating activities, net				0	0
Net cash used for operating activities from continuing operations				0	0
CASH FLOWS FROM INVESTING ACTIVITIES
Return of investment in unconsolidated joint ventures, net				0	0
Additions to property, plant and equipment				0	0
Purchases of marketable securities, available-for-sale				0	0
Proceeds from sales and maturities of marketable securities, available-for-sale				0	0
Net cash (used for) provided by investing activities from continuing operations				0	0
CASH FLOWS FROM FINANCING ACTIVITIES
Decrease in debt				0
Decrease in borrowings against financial services credit facilities, net				0	0
Common stock dividends and stock-based compensation				0	0
Decrease in restricted cash				0	0
Intercompany balances				0	0
Other financing activities, net				0	0
Net cash (used for) provided by financing activities from continuing operations				0	0
Net decrease in cash and cash equivalents from continuing operations				0	0
Cash flows from operating activities—discontinued operations					0
Cash and cash equivalents at beginning of period1				0	0
CASH AND CASH EQUIVALENTS AT END OF PERIOD		$ 0	$ 0	$ 0	$ 0

[1] Includes cash and cash equivalents of $27,000 associated with discontinued operations at December 31, 2013.