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Investment in Real Estate - Summary of Acquisition Purchase Price Allocation (Details) - USD ($) $ in Thousands | 12 Months Ended
--- | ---
Dec. 31, 2019 | Dec. 31, 2018 | Dec. 31, 2017
Real Estate [Line Items] |  |  |
Land | $ 957,478 | $ 909,318 |
Buildings and Improvements | 2,782,430 | 2,704,850 |
Acquisition Activity |  |  |
Real Estate [Line Items] |  |  |
Land | 101,764 | 79,347 |
Buildings and Improvements | 43,693 | 81,747 |
Other Assets | 859 | 1,225 |
Purchase price of industrial properties acquired | 147,887 | 167,546 | $ 174,209
Assumed Mortgage Loan (See Note 4) | 0 | (11,654) |
Purchase Price, Net | 147,887 | 155,892 |
Acquisition Activity | In-Place Leases |  |  |
Real Estate [Line Items] |  |  |
Acquired finite lived intangible assets, fair value | (5,601) | (5,302) |
Acquisition Activity | Above Market Leases |  |  |
Real Estate [Line Items] |  |  |
Acquired finite lived intangible assets, fair value | (34) | (662) |
Acquisition Activity | Below Market Leases |  |  |
Real Estate [Line Items] |  |  |
Acquired Finite-lived Intangible Liabilities, Fair Value | $ (4,064) | $ (737) |

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