Annual report pursuant to Section 13 and 15(d)

Real Estate and Intangible Assets - Carrying Value of Lease Intangible Assets or Liabilities in Other Assets and Other Liabilities (Details)

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Real Estate and Intangible Assets - Carrying Value of Lease Intangible Assets or Liabilities in Other Assets and Other Liabilities (Details) - USD ($)
$ in Thousands
12 Months Ended
Dec. 31, 2018
Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items]    
Amortization of above-market lease values and deferred revenues $ 13 $ 10
Below market lease, period increase (decrease) 77 63
Above-market lease values and lease incentives    
Finite-Lived Intangible Assets [Line Items]    
Finite-lived intangible assets, gross 126 26
Accumulated amortization (18) (5)
Below-market lease values and deferred revenue    
Finite-Lived Intangible Assets [Line Items]    
Below market lease, gross (917) (823)
Below market lease, accumulated amortization 202 125
Net Below-Market Leases    
Finite-Lived Intangible Assets [Line Items]    
Finite lived intangible assets liabilities gross (791) (797)
Finite lived intangible assets accumulated amortization and accretion $ (184) $ (120)