INCOME TAXES (Details) (USD $)	3 Months Ended		9 Months Ended
	Sep. 30, 2012	Sep. 30, 2011	Sep. 30, 2012	Sep. 30, 2011	Dec. 31, 2011	May 12, 2011
Provision (benefit) for income taxes
Income tax expense (benefit)	$ (8,886,000)	$ (13,732,000)	$ (2,727,000)	$ (23,039,000)
Net deferred tax liabilities	262,500,000		262,500,000		258,700,000
Deferred tax liabilities related to Atria Senior Living transaction						$ 43,466,000