Quarterly report pursuant to Section 13 or 15(d)

Subsequent Events - Additional Information (Details)

v3.10.0.1
Subsequent Events - Additional Information (Details)
$ in Thousands
 1 Months Ended 9 Months Ended
Oct. 30, 2018
USD ($)
ft²
tenant
Oct. 24, 2018
USD ($)
ft²
Oct. 31, 2018
USD ($)
shares
Sep. 30, 2018
USD ($)
Sep. 30, 2017
USD ($)
Subsequent Event [Line Items]          
Purchase price       $ 22,800 $ 94,421
Series D Preferred Stock | Subsequent event          
Subsequent Event [Line Items]          
Gross proceeds of the offering     $ 1,100    
Number of shares issued (in shares) | shares     61,045    
Series A and B Preferred Stock | Subsequent event          
Subsequent Event [Line Items]          
Number of shares issued (in shares) | shares     0    
Hickory, North Carolina | Subsequent event          
Subsequent Event [Line Items]          
Square footage | ft²   60,000      
Annualized rent   $ 1,100      
Detroit, Michigan | Subsequent event          
Subsequent Event [Line Items]          
Square footage | ft² 218,703        
Annualized rent $ 1,700        
Purchase price 21,300        
Payments to acquire property 800        
Debt issued or assumed $ 6,900        
Stated interest rate (as percent) 4.65%        
Term of debt 19 years        
Percentage of property leased 100.00%        
Number of tenants | tenant 2        
Lease term 10 years 6 months        
Tenant improvements | Hickory, North Carolina | Subsequent event          
Subsequent Event [Line Items]          
Tenant commitments   400      
Leasing commissions | Hickory, North Carolina | Subsequent event          
Subsequent Event [Line Items]          
Tenant commitments   $ 200