Discontinued Operations Data by Business Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2015	Dec. 31, 2014	Dec. 31, 2013
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Revenues	$ 43,145	$ 297,099	$ 1,033,701
Operating income (loss)	8,093	3,220	86,208
Rent	7,368	83,107	123,225
Depreciation	1,123	5,380	29,444
Hospital Division
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Revenues	2,368	26,571	246,925
Operating income (loss)	920	(3,798)	30,911
Rent	1,989	4,174	11,926
Depreciation		1,700	12,283
Nursing Center Division
Income Statement Balance Sheet And Additional Disclosures By Disposal Groups Including Discontinued Operations [Line Items]
Revenues	40,777	270,528	786,776
Operating income (loss)	7,173	7,018	55,297
Rent	5,379	78,933	111,299
Depreciation	$ 1,123	$ 3,680	$ 17,161