Dispositions, Assets Held for Sale and Discontinued Operations (Tables)

12 Months Ended

Dec. 31, 2011

Dispositions, Assets Held for Sale and Discontinued Operations (Tables) [Abstract]

Summary of real property disposition activity

		Year Ended
		December 31, 2011		December 31, 2010		December 31, 2009
Real property dispositions:
	Seniors housing triple-net	$	150,755	$	170,290	$	101,155
	Medical facilities		35,295		14,092		85,558
	Total dispositions		186,050		184,382		186,713
Add: Gain (loss) on sales of real property			61,160		36,115		43,394
	Seller financing on sales of real property		0		(1,470)		(6,100)
Proceeds from real property sales		$	247,210	$	219,027	$	224,007

Reclassification impact as result of classifying properties as discontinued operations

			Year Ended December 31,
		2011		2010		2009
Revenues:
	Rental income	$	64,982	$	93,099	$	112,714
	Other income		0		0		8,059
Expenses:
	Interest expense		14,470		19,812		23,140
	Property operating expenses		5,292		8,002		7,276
	Provision for depreciation		19,053		29,667		39,385
Income (loss) from discontinued operations, net		$	26,167	$	35,618	$	50,972