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Operating Real Estate - Oak Cottage of Santa Barbara (Details)
$ in Millions
1 Months Ended
Feb. 28, 2017
USD ($)
unit
Dec. 31, 2017
unit
Business Acquisition [Line Items]    
Units Under Management(1) | unit   10,984,000
Oak Cottage    
Business Acquisition [Line Items]    
Units Under Management(1) | unit 40  
Purchase price $ 19.4  
Acquisition funded by equity 16.2  
Seller financed amount $ 3.5  
Interest rate 6.00%