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Partners' Capital of the Operating Partnership - Narrative (Details) - USD ($) $ in Thousands |  | 1 Months Ended | 12 Months Ended |
--- | --- | --- | --- | ---
Mar. 25, 2020 | Jul. 31, 2019 | Dec. 31, 2020 | Dec. 31, 2019 | Dec. 31, 2018 | Mar. 31, 2020
Class of Stock [Line Items] |  |  |  |  |  |
Common stock, shares issued (in shares) |  |  | 116,035,827 | 106,016,287 |  |
Aggregate net proceeds after selling commissions |  |  | $ 721,665 | $ 353,722 | $ 130,693 |
Forward Equity Sale [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Aggregate net proceeds after selling commissions |  | $ 354,300 |  |  |  |
Forward Equity Sale [Member] | Common Stock [Member] |  |  |  |  |  |
Class of Stock [Line Items] |  |  |  |  |  |
Common stock, shares issued (in shares) | 5,750,000 | 5,000,000 |  |  |  | 5,750,000
Aggregate net proceeds after selling commissions | $ 474,900 | $ 354,300 |  |  |  |
Common units (in units) |  | 5,000,000 |  |  |  | 5,750,000

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