Quarterly report pursuant to Section 13 or 15(d)

Real Estate - Additional Information (Details)

v3.10.0.1
Real Estate - Additional Information (Details)
$ / shares in Units, $ in Thousands
3 Months Ended 9 Months Ended
Jan. 18, 2018
USD ($)
ft²
$ / shares
shares
Sep. 30, 2018
USD ($)
parcel
Sep. 30, 2017
USD ($)
Sep. 30, 2018
USD ($)
parcel
Sep. 30, 2017
USD ($)
Real Estate [Abstract]          
Depreciation expense   $ 3,050 $ 2,650 $ 9,553 $ 7,958
Business Acquisition [Line Items]          
Number of undeveloped parcels | parcel   6   6  
JANAF          
Business Acquisition [Line Items]          
Consideration paid in acquisition $ 85,650        
JANAF | VIRGINIA          
Business Acquisition [Line Items]          
Consideration paid in acquisition $ 85,650        
Share price (in dollars per share) | $ / shares $ 7.53        
Area of real estate property leased | ft² 810,137        
Percentage real estate property leased 94.00%        
JANAF | Common Stock | VIRGINIA          
Business Acquisition [Line Items]          
Number of shares issued in acquisition (in shares) | shares 150,000        
Held-for-sale, Not Discontinued Operations          
Business Acquisition [Line Items]          
Number of undeveloped parcels | parcel   7   7