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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 | Jun. 30, 2021 | Dec. 31, 2020
--- | --- | ---
Above-market lease values and lease incentives |  |
Finite-Lived Intangible Assets [Line Items] |  |
Lease intangibles | $ 255 | $ 308
Accumulated amortization | (154) | (154)
Below-market lease values and deferred revenue |  |
Finite-Lived Intangible Assets [Line Items] |  |
Below-market lease values, gross | (2,220) | (908)
Below-market lease values, accumulated (amortization) accretion | 426 | 336
Market leases, net |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets (liability) gross | (1,965) | (600)
Finite-lived intangible asset, accumulated (amortization) accretion | $ 272 | $ 182

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