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Acquired Properties - Narrative (Details) - USD ($) $ in Thousands | 12 Months Ended
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Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018
Asset Acquisition [Abstract] |  |  |
Transaction costs capitalized | $ 121 | $ 2,334 | $ 430

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- Definition Asset Acquisition, Transaction Costs Capitalized During the Period + References No definition available. + Details
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