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Real Estate and Intangible Assets - Fair Value of Acquired Assets and Liabilities Assumed (Detail) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2019 | Dec. 31, 2018
Business Acquisition [Line Items] |  |
Total Purchase Price | $ 130,313 | $ 63,245
Prepaid rent | 187 |
Customer Relationships |  |
Business Acquisition [Line Items] |  |
Purchase price | 5,019 | 2,698
Above Market Leases |  |
Business Acquisition [Line Items] |  |
Purchase price | 1,950 | 239
Below Market Leases (1) |  |
Business Acquisition [Line Items] |  |
Fair Value of Interest Rate Swap Assumed and (Below Market Leases) | (1,915) | (1,475)
Land |  |
Business Acquisition [Line Items] |  |
Purchase price | 12,351 | 6,278
Building |  |
Business Acquisition [Line Items] |  |
Purchase price | 93,502 | 44,754
Tenant Improvements |  |
Business Acquisition [Line Items] |  |
Purchase price | 3,119 | 2,400
In-place Leases |  |
Business Acquisition [Line Items] |  |
Purchase price | 9,013 | 4,418
Leasing Costs |  |
Business Acquisition [Line Items] |  |
Purchase price | $ 7,274 | $ 3,933

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