v2.4.0.6
Related Party Transactions (Details) (USD $)
12 Months Ended 8 Months Ended 6 Months Ended
Jul. 01, 2010
Todd W. Lillibridge
Intellectual Property Rights Purchase and Sale Agreement
Dec. 31, 2011
Sutter Health
Medical office buildings
Dec. 31, 2010
Tangram
property
Dec. 31, 2009
Tangram
property
Dec. 31, 2011
ATRIA
Senior Living management fee
Dec. 31, 2011
The Irvine Company
Office space rent
Dec. 31, 2011
Pacific Medical Buildings LLC
Medical office buildings
Related party transaction              
Ownership interests in properties (as a percent)             82.80%
Property leased by related party (as a percent)   100.00%          
Related party costs         $ 20,200,000 $ 280,000  
Aggregate purchase price for certain derivative trademarks, design marks and slogans 3,000,000            
Number of properties leased under master lease agreement     8 8      
Base rent earned     $ 1,000,000 $ 1,000,000