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Real Estate and Intangible Assets - Business Combinations and Asset Acquisitions (Details) - USD ($) $ in Thousands | 3 Months Ended
--- | ---
Mar. 31, 2021 | Mar. 31, 2020
Business Acquisition [Line Items] |  |
Total purchase price | $ 11,146 | $ 71,965
Land value subject to land lease agreement | 2,711 |
Loan receivable | 53 |
Prepaid rent | 62 |
Customer relationships |  |
Business Acquisition [Line Items] |  |
Assets acquired | 294 | 2,223
Above market leases |  |
Business Acquisition [Line Items] |  |
Assets acquired | 127 | 210
Below market leases |  |
Business Acquisition [Line Items] |  |
Liabilities assumed | 0 | (1,752)
Land |  |
Business Acquisition [Line Items] |  |
Assets acquired | 258 | 7,296
Building |  |
Business Acquisition [Line Items] |  |
Assets acquired | 8,759 | 54,000
Tenant Improvements |  |
Business Acquisition [Line Items] |  |
Assets acquired | 88 | 1,285
In-place leases |  |
Business Acquisition [Line Items] |  |
Assets acquired | 817 | 4,442
Leasing costs |  |
Business Acquisition [Line Items] |  |
Assets acquired | $ 803 | $ 4,261

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