Consolidated Statements of Income (Unaudited) (USD $) In Thousands, except Per Share data	3 Months Ended		6 Months Ended
	Jun. 30, 2011	Jun. 30, 2010	Jun. 30, 2011	Jun. 30, 2010
Rental income:
Triple-net leased	$ 120,129	$ 117,386	$ 238,732	$ 233,719
Medical office buildings	23,758	12,240	47,994	24,429
Total rental income	143,887	129,626	286,726	258,148
Resident fees and services	202,482	109,867	316,984	218,353
Medical office building services revenue	9,822		16,779
Income from loans and investments	8,391	3,705	14,476	7,322
Interest and other income	78	122	156	385
Total revenues	364,660	243,320	635,121	484,208
Expenses:
Interest	53,732	43,840	96,290	87,930
Depreciation and amortization	80,755	50,040	132,514	102,354
Property-level operating expenses:
Senior living	136,739	71,059	214,850	145,736
Medical office buildings	8,278	4,124	16,954	8,326
Property-level operating expenses	145,017	75,183	231,804	154,062
Medical office building services costs	7,954		13,490
General, administrative and professional fees (including non-cash stock-based compensation expense of $4,352 and $3,057 for the three months ended 2011 and 2010, respectively, and $8,368 and $6,089 for the six months ended 2011 and 2010, respectively)	15,554	9,858	30,386	20,541
Loss on extinguishment of debt	6	6,549	16,526	6,549
Merger-related expenses and deal costs	55,807	4,207	62,256	6,526
Other	(7,773)	121	(7,772)	15
Total expenses	351,052	189,798	575,494	377,977
Income before loss from unconsolidated entities, income taxes, discontinued operations and noncontrolling interest	13,608	53,522	59,627	106,231
Loss from unconsolidated entities	(83)		(253)
Income tax benefit (expense)	6,209	(409)	9,406	(695)
Income from continuing operations	19,734	53,113	68,780	105,536
Discontinued operations		5,852		6,597
Net income	19,734	58,965	68,780	112,133
Net income attributable to noncontrolling interest (net of tax of $0 and $559 for the three months ended 2011 and 2010, respectively, and $0 and $978 for the six months ended 2011 and 2010, respectively)	58	898	120	1,447
Net income attributable to common stockholders	$ 19,676	$ 58,067	$ 68,660	$ 110,686
Basic:
Income from continuing operations attributable to common stockholders	$ 0.11	$ 0.33	$ 0.41	$ 0.67
Discontinued operations	$ 0.00	$ 0.04		$ 0.04
Net income attributable to common stockholders	$ 0.11	$ 0.37	$ 0.41	$ 0.71
Diluted:
Income from continuing operations attributable to common stockholders	$ 0.11	$ 0.33	$ 0.40	$ 0.66
Discontinued operations	$ 0.00	$ 0.04		$ 0.04
Net income attributable to common stockholders	$ 0.11	$ 0.37	$ 0.40	$ 0.70
Weighted average shares used in computing earnings per common share:
Basic	176,262	156,611	168,369	156,533
Diluted	177,945	157,441	170,013	157,206
Dividends declared per common share	$ 0.7014	$ 0.535	$ 1.2764	$ 1.07