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Real Estate and Intangible Assets - Fair Value of Acquired Assets and Liabilities Assumed (Detail) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2020 | Dec. 31, 2019
Business Acquisition [Line Items] |  |
Total Purchase Price | $ 129,974 | $ 130,313
Land subject to land lease agreement | 2,711 |
Loans receivable | 53 |
Prepaid rent | 62 | 187
Customer Relationships |  |
Business Acquisition [Line Items] |  |
Fair value of assets acquired | 5,239 | 5,019
Above Market Leases |  |
Business Acquisition [Line Items] |  |
Fair value of assets acquired | 529 | 1,950
Below Market Leases |  |
Business Acquisition [Line Items] |  |
Fair Value of Interest Rate Swap Assumed and (Below Market Leases) | (2,271) | (1,915)
Land |  |
Business Acquisition [Line Items] |  |
Fair value of assets acquired | 11,264 | 12,351
Building |  |
Business Acquisition [Line Items] |  |
Fair value of assets acquired | 97,101 | 93,502
Tenant Improvements |  |
Business Acquisition [Line Items] |  |
Fair value of assets acquired | 2,684 | 3,119
In-place Leases |  |
Business Acquisition [Line Items] |  |
Fair value of assets acquired | 9,076 | 9,013
Leasing Costs |  |
Business Acquisition [Line Items] |  |
Fair value of assets acquired | $ 6,352 | $ 7,274

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