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Real Estate and Intangible Assets - Carrying Value of Lease Intangibles and Accumulated Amortization for Each Intangible Asset or Liability Class (Detail) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2018 | Dec. 31, 2017
Finite-Lived Intangible Assets [Line Items] |  |
Estimated Amortization Expense | $ 5,686 | $ 5,492
Amortization of intangible assets | 1,100 |
Lease intangibles: |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 7,921 | 6,878
Accumulated amortization | (2,235) | (1,386)
Estimated Amortization Expense | 5,686 | 5,492
Leasehold interest – land |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 3,498 | 3,498
In-place leases |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 2,046 | 1,451
Leasing costs |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | 1,963 | 1,490
Tenant relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets, gross | $ 414 | $ 439

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