Quarterly report pursuant to Section 13 or 15(d)

Property Portfolio (summary of the acquired lease intangible amortization) (Details)

v3.10.0.1
Property Portfolio (summary of the acquired lease intangible amortization) (Details) - USD ($)
$ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2018
Sep. 30, 2017
Sep. 30, 2018
Sep. 30, 2017
Leases, Acquired-in-Place [Member]        
Property, Plant and Equipment [Line Items]        
Finite-Lived Intangible Assets, Accumulated Amortization $ 647 $ 388 $ 1,797 $ 1,022
Lease Costs [Member]        
Property, Plant and Equipment [Line Items]        
Finite-Lived Intangible Assets, Accumulated Amortization 307 135 848 304
market ground lease [Member]        
Property, Plant and Equipment [Line Items]        
Finite-Lived Intangible Assets, Accumulated Amortization 6 2 16 4
Above Market Leases [Member]        
Property, Plant and Equipment [Line Items]        
Finite-Lived Intangible Assets, Accumulated Amortization 240 55 620 73
Below Market Lease [Member]        
Property, Plant and Equipment [Line Items]        
Finite-Lived Intangible Assets, Accumulated Amortization $ 56 $ 32 $ 152 $ 63