Triple-Net Lease Arrangements (Details)
1 Months Ended 12 Months Ended
Dec. 01, 2015
USD ($)
property
Jul. 31, 2015
operator
Dec. 31, 2014
USD ($)
Dec. 31, 2015
USD ($)
state
Dec. 31, 2014
USD ($)
Dec. 31, 2013
USD ($)
Dec. 31, 2016
property
Concentration of credit risk              
Number of states | state       36      
Deferred Rent Receivables, Net     $ 766,000 $ 579,000 $ 766,000    
Allowance for straight-line rent receivable     (58,000,000) (87,400,000) (58,000,000)    
Provision for doubtful accounts, straight-line rent       $ 25,800,000 $ 21,400,000 $ 16,100,000  
Number of operators | operator   1          
Other Expense              
Concentration of credit risk              
Payments for legal settlements     $ 10,000,000        
Scenario, Forecast              
Concentration of credit risk              
Capital lease, number of properties with exercised purchase option | property             7
Signature HealthCARE LLC              
Concentration of credit risk              
Term loan amount $ 9,000,000            
Operating leases, basis amount included $ 8,000,000            
Loan receivable stated interest rate, percentage 8.50%            
Loans receivable $ 1,000,000            
Term of loan receivable 4 years            
Signature HealthCARE LLC | Skilled Nursing Facilities              
Concentration of credit risk              
Number of properties leased, transitioned, or sold | property 18            
Total revenues or NOI | Texas              
Concentration of credit risk              
Number of states accounting for more than 10% of total revenues | state       1      
Total revenues | Senior Care Centers, LLC              
Concentration of credit risk              
Percentage of real estate investments based on gross book value (as a percent)       11.70% 1.50% 1.50%  
Total revenues | Avamere Group, LLC              
Concentration of credit risk              
Percentage of real estate investments based on gross book value (as a percent)       10.20% 8.80% 8.40%  
Total revenues | Signature HealthCARE LLC              
Concentration of credit risk              
Percentage of real estate investments based on gross book value (as a percent)       10.10% 7.60% 3.40%  
Customer Concentration Risk | Total gross book value of properties | Senior Care Centers, LLC              
Concentration of credit risk              
Percentage of real estate investments based on gross book value (as a percent)       19.20%      
Customer Concentration Risk | Total gross book value of properties | Avamere Group, LLC              
Concentration of credit risk              
Percentage of real estate investments based on gross book value (as a percent)       10.00%