Supplemental Guarantor Information (Details 3) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2013	Mar. 31, 2012
Consolidating statements of other comprehensive income
Net income (loss)	$ 22,117	$ (5,108)
Other comprehensive (loss) income before tax:
Reduction of unrealized gain related to cash flow hedging instruments	0	(302)
Unrealized gain on marketable securities, available-for-sale:
Unrealized gain	28	794
Less: reclassification adjustments for (gains) losses included in net income (loss)	(152)	67
Total unrealized (loss) gain on marketable securities, available-for-sale	(124)	861
Other comprehensive (loss) income before tax	(124)	559
Income tax benefit related to items of other comprehensive (loss) income	0	115
Other comprehensive (loss) income, net of tax	(124)	674
Comprehensive income (loss)	21,993	(4,434)
TRG, INC.
Consolidating statements of other comprehensive income
Net income (loss)	22,117	(5,108)
Other comprehensive (loss) income before tax:
Reduction of unrealized gain related to cash flow hedging instruments		(302)
Unrealized gain on marketable securities, available-for-sale:
Unrealized gain	28	794
Less: reclassification adjustments for (gains) losses included in net income (loss)	(152)	67
Total unrealized (loss) gain on marketable securities, available-for-sale		861
Other comprehensive (loss) income before tax	(124)	559
Income tax benefit related to items of other comprehensive (loss) income	0	115
Other comprehensive (loss) income, net of tax	(124)	674
Comprehensive income (loss)	21,993	(4,434)
GUARANTOR SUBSIDIARIES
Consolidating statements of other comprehensive income
Net income (loss)	8,293	(3,162)
Other comprehensive (loss) income before tax:
Reduction of unrealized gain related to cash flow hedging instruments		0
Unrealized gain on marketable securities, available-for-sale:
Unrealized gain	0	0
Less: reclassification adjustments for (gains) losses included in net income (loss)	0	0
Total unrealized (loss) gain on marketable securities, available-for-sale		0
Other comprehensive (loss) income before tax	0	0
Income tax benefit related to items of other comprehensive (loss) income	0	0
Other comprehensive (loss) income, net of tax	0	0
Comprehensive income (loss)	8,293	(3,162)
NON-GUARANTOR SUBSIDIARIES
Consolidating statements of other comprehensive income
Net income (loss)	4,282	645
Other comprehensive (loss) income before tax:
Reduction of unrealized gain related to cash flow hedging instruments		0
Unrealized gain on marketable securities, available-for-sale:
Unrealized gain	0	0
Less: reclassification adjustments for (gains) losses included in net income (loss)	0	0
Total unrealized (loss) gain on marketable securities, available-for-sale		0
Other comprehensive (loss) income before tax	0	0
Income tax benefit related to items of other comprehensive (loss) income	0	0
Other comprehensive (loss) income, net of tax	0	0
Comprehensive income (loss)	4,282	645
CONSOLIDATING ELIMINATIONS
Consolidating statements of other comprehensive income
Net income (loss)	(12,575)	2,517
Other comprehensive (loss) income before tax:
Reduction of unrealized gain related to cash flow hedging instruments		0
Unrealized gain on marketable securities, available-for-sale:
Unrealized gain	0	0
Less: reclassification adjustments for (gains) losses included in net income (loss)	0	0
Total unrealized (loss) gain on marketable securities, available-for-sale		0
Other comprehensive (loss) income before tax	0	0
Income tax benefit related to items of other comprehensive (loss) income	0	0
Other comprehensive (loss) income, net of tax	0	0
Comprehensive income (loss)	$ (12,575)	$ 2,517