Quarterly report pursuant to Section 13 or 15(d)

Commitments and Contingencies - Additional Information (Details)

v3.10.0.1
Commitments and Contingencies - Additional Information (Details) - USD ($)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Jun. 28, 2018
Series D Preferred Stock          
Loss Contingencies [Line Items]          
Preferred stock, liquidation price per share (in dollars per share) $ 25.00   $ 25.00   $ 25.00
JANAF          
Loss Contingencies [Line Items]          
Ground leases expense $ 65 $ 0 $ 191 $ 0  
Ground lease expense rent percentage $ 29   $ 82    
Northeast          
Loss Contingencies [Line Items]          
Percentage accounted by properties of its annualized base rent 4.00%   4.00%    
Mid Atlantic          
Loss Contingencies [Line Items]          
Percentage accounted by properties of its annualized base rent 19.00%   19.00%    
Southeast          
Loss Contingencies [Line Items]          
Percentage accounted by properties of its annualized base rent 76.00%   76.00%    
Southwest          
Loss Contingencies [Line Items]          
Percentage accounted by properties of its annualized base rent 1.00%   1.00%