CONSOLIDATING FINANCIAL STATEMENTS (Narrative) (Detail) (USD $)																12 Months Ended
	Dec. 31, 2012	Dec. 31, 2011	Dec. 31, 2012 Non-guarantor subsidiaries	Dec. 31, 2011 Non-guarantor subsidiaries	Dec. 31, 2012 Guarantor subsidiaries	Dec. 31, 2011 Guarantor subsidiaries	Jun. 30, 2012 Unrestricted Subsidiaries Subsidiary	Jun. 29, 2010 CapitalSource Non-guarantor subsidiaries Subsidiary	Dec. 31, 2012 7% 2016 Notes	Dec. 31, 2011 7% 2016 Notes	Dec. 31, 2012 7.50% Notes due 2020	Dec. 31, 2011 7.50% Notes due 2020	Dec. 31, 2012 6.75% Notes due 2022	Dec. 31, 2011 6.75% Notes due 2022	Dec. 31, 2012 5.875% Notes due 2024	Dec. 31, 2012 HUD debt Non-guarantor subsidiaries Subsidiary	Dec. 31, 2011 HUD debt Non-guarantor subsidiaries Subsidiary
Condensed Financial Statements, Captions [Line Items]
Senior notes, principal amount										$ 175,000,000	$ 200,000,000		$ 575,000,000		$ 400,000,000
Rate on senior notes									7.00%	7.00%	7.50%	7.50%	6.75%	6.75%	5.875%
Number of subsidiaries acquired and designated as unrestricted								39								8	20
Principal payment for mortgage																4,000,000	2,600,000
Ownership percent of the subsidiary guarantors (in percent)																100.00%	100.00%
Total assets	2,982,005,000	2,557,312,000	597,896,000	477,292,000	2,547,719,000	2,199,584,000
Total asset for subsidiaries removed							$ 47,900,000
Number of subsidiaries removed							5