XML 70 R50.htm IDEA: XBRL DOCUMENT v3.3.1.900
Concentration of Credit Risk (Details)
$ in Thousands
12 Months Ended
Dec. 31, 2015
USD ($)
property
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Concentration of Credit Risk.      
Investment $ 7,456,940 $ 6,222,360  
Revenue $ 630,899 526,703 $ 459,380
Five Star | Senior Living Communities      
Concentration of Credit Risk.      
Number of properties acquired, referred to as managed properties | property 60    
Investment | Rents from significant lessee      
Concentration of Credit Risk.      
Investment $ 7,456,940 $ 6,238,611  
% of Total (as a percent) 100.00% 100.00%  
Investment | Rents from significant lessee | Five Star      
Concentration of Credit Risk.      
Investment $ 2,147,388 $ 2,125,517  
% of Total (as a percent) 29.00% 34.00%  
Investment | Rents from significant lessee | All others      
Concentration of Credit Risk.      
Investment $ 5,309,552 $ 4,113,094  
% of Total (as a percent) 71.00% 66.00%  
Rental income | Rents from significant lessee      
Concentration of Credit Risk.      
Revenue $ 630,899 $ 526,703  
% of Total (as a percent) 100.00% 100.00%  
Rental income | Rents from significant lessee | Five Star      
Concentration of Credit Risk.      
Revenue $ 196,919 $ 196,269  
% of Total (as a percent) 31.00% 37.00%  
Rental income | Rents from significant lessee | All others      
Concentration of Credit Risk.      
Revenue $ 433,980 $ 330,434  
% of Total (as a percent) 69.00% 63.00%