FAIR VALUE DISCLOSURES (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014		Mar. 31, 2013	Dec. 31, 2013
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Contingent consideration	$ 10,400			$ 7,500
New contingent liability	3,200
Change in fair value of contingent consideration	(300)		(500)
Loans receivable, Face Value	190,606	[1]		176,558	[1]
Preferred equity investment, Face Value	7,979			7,695
Preferred equity investments	8,236
Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans receivable	191,529	[2]		177,509	[2]
Preferred equity investments	8,074			7,784
Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Loans receivable	193,069			176,985
Preferred equity investments	8,236			7,950
Senior Notes [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities, Face Value	550,000	[1]		411,250	[1]
Senior Notes [Member] | Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities	550,000	[2]		414,402	[2]
Senior Notes [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities	566,875			421,122
Mortgage indebtedness [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities, Face Value	130,106	[1]		141,328	[1]
Mortgage indebtedness [Member] | Carrying Amount [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities	130,106	[2]		141,328	[2]
Mortgage indebtedness [Member] | Fair Value [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Financial liabilities	121,208			130,622
Forest Park Medical Center - Frisco [Member]
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Change in fair value of contingent consideration	$ 300

[1] (1) Face value represents amounts contractually due under the terms of the respective agreements.

[2] (2) Carrying amounts represent the book value of financial instruments and include unamortized premiums (discounts).