Debt (Term Loans And Covenants) (Details) (USD $)	12 Months Ended			1 Months Ended	12 Months Ended			1 Months Ended			12 Months Ended					12 Months Ended
	Dec. 31, 2011	Dec. 31, 2010	Dec. 31, 2009	May 31, 2010 Term Loans [Member]	Dec. 31, 2010 Term Loans [Member]	Dec. 31, 2011 Term Loans [Member]	Dec. 31, 2009 Term Loans [Member]	Apr. 30, 2011 Collateralized Term Loan [Member]	Nov. 30, 2008 Collateralized Term Loan [Member]	Dec. 31, 2011 LIBOR [Member]	Dec. 31, 2009 LIBOR [Member] Term Loans [Member]	May 31, 2010 LIBOR [Member] Term Loans [Member]	May 31, 2010 Federal Funds Rate [Member] Term Loans [Member]	Dec. 31, 2010 LIBOR Floor [Member] Term Loans [Member]	Dec. 31, 2009 2010 Term Loan [Member] Term Loans [Member]	Dec. 31, 2011 Northland LTACH Hospital [Member] Mortgages [Member] years
Debt Instrument [Line Items]
Liabilities acquired																$ 16,100,000
Amortization period																30
Debt instrument face amount					157,683,000	14,429,000
Credit facility paid	246,262,000	216,765,000	1,232,000		220,000,000			9,000,000
Dividend rate as percentage of normalized adjusted funds from operations	120.00%
Final percentage of dividend rate after quarterly deductions	95.00%
Percentage of maintenance of unencumbered assets	150.00%
Credit facilities, amount outstanding				$ 150,000,000					$ 9,000,000						$ 64,500,000
Credit facilities, basis spread of interest rate					5.00%		2.26%			2.60%		3.50%	2.50%	1.50%
Debt instrument maturity date				May 17, 2016												Jan. 01, 2018
Debt instrument basis spread on variable interest rate											200
Interest rate						6.20%			5.66%				0.50%			6.20%