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Summary of Significant Accounting Policies - Revenue Recognition (Details)
 12 Months Ended
Dec. 31, 2015
USD ($)
property
item
Revenue Recognition  
Maximum period over which loan is to be considered as non-performing 60 days
Methods used for calculation of annual increases over the rents of the prior year | item 4
Maximum period over which a lease is to be considered as non-performing 60 days
Federal Income Taxes  
Period considered for calculation of depreciation for federal tax purpose 27 years 6 months
Period considered for determining the taxability of distributions to shareholders 40 years
(Excess) / Deficit of book basis of net depreciable assets over tax basis $ 56,074,000
Discontinued Operations  
Depreciation expense $ 0
Assisted Living  
Assisted living properties  
Number of properties leased | property 64
Minimum  
Revenue Recognition  
Specified annual increase over the prior year's rent (as a percent) 2.00%
Maximum  
Revenue Recognition  
Specified annual increase over the prior year's rent (as a percent) 3.00%