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Real Estate Investment Properties - Additional Information (Details)
$ in Thousands
1 Months Ended 3 Months Ended 6 Months Ended
Apr. 30, 2017
USD ($)
Property
shares
Mar. 31, 2017
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2016
USD ($)
Jun. 30, 2017
Property
Real Estate Properties [Line Items]          
Depreciation and amortization expenses   $ 16,750 $ 16,635 $ 33,457  
Number of properties owned | Property         0
Disposal Group, Not Discontinued Operations          
Real Estate Properties [Line Items]          
Number of properties sold | Property 36        
Proceeds from sale of properties $ 182,600        
Common stock received as consideration (in shares) | shares 8,851,264        
Common stock received as consideration $ 647,400        
Continuing Operations          
Real Estate Properties [Line Items]          
Depreciation and amortization expenses   $ 16,600 $ 16,400 $ 33,200