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Real Estate and Intangibles Assets - Carrying Value of Lease Intangibles and Accumulated Amortization for Each Intangible Asset or Liability Class (Detail) - USD ($) $ in Thousands | Mar. 31, 2017 | Dec. 31, 2016
--- | --- | ---
Finite-Lived Intangible Assets [Line Items] |  |
Lease intangibles, net | $ 1,872 | $ 2,000
Lease intangibles, at cost |  |
Finite-Lived Intangible Assets [Line Items] |  |
Lease intangibles, at cost | 3,284 | 3,273
Accumulated amortization | (1,412) | (1,273)
Lease intangibles, net | 1,872 | 2,000
In-place leases |  |
Finite-Lived Intangible Assets [Line Items] |  |
Lease intangibles, at cost | 1,481 | 1,481
Leasing costs |  |
Finite-Lived Intangible Assets [Line Items] |  |
Lease intangibles, at cost | 1,097 | 1,086
Tenant relationships |  |
Finite-Lived Intangible Assets [Line Items] |  |
Lease intangibles, at cost | 706 | 706
Above (below)-market leases and below sale inducements |  |
Finite-Lived Intangible Assets [Line Items] |  |
Finite-lived intangible assets (liability) gross | (766) | (766)
Finite-lived intangible asset, accumulated (amortization) accretion | 60 | 47
Above-market lease values |  |
Finite-Lived Intangible Assets [Line Items] |  |
Lease intangibles, at cost | 20 | 19
Accumulated amortization | (16) | (14)
Below-market lease values and deferred revenue |  |
Finite-Lived Intangible Assets [Line Items] |  |
Below-market lease values, gross | (786) | (785)
Below-market lease values, accumulated (amortization) accretion | $ 76 | $ 61

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