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Acquisitions - Operating Property Acquisitions (Details) $ in Thousands |  |  |  | 12 Months Ended
--- | --- | --- | --- | ---
Sep. 17, 2021 USD ($) ft² property | Jun. 23, 2021 USD ($) | Jun. 22, 2021 USD ($) | Dec. 31, 2021 USD ($) ft² | Dec. 31, 2020 USD ($) property
Schedule of Asset Acquisitions, by Acquisition [Line Items] |  |  |  |  |
Number of buildings acquired | property |  |  |  |  | 0
Rentable square feet (unaudited) | ft² |  |  |  | 15,456,528 |
Ground lease right-of-use-asset |  |  |  | $ 127,302 | $ 95,523
Development properties |  |  |  |  |
Schedule of Asset Acquisitions, by Acquisition [Line Items] |  |  |  |  |
Purchase price |  |  |  | 622,200 |
2001 West 8th Avenue, Seattle, WA |  |  |  |  |
Schedule of Asset Acquisitions, by Acquisition [Line Items] |  |  |  |  |
Number of buildings acquired | property | 1 |  |  |  |
Rentable square feet (unaudited) | ft² | 539,226 |  |  |  |
Purchase price | $ 490,000 |  |  |  |
Revenue contributed from acquired properties |  |  |  | 9,900 |
Net income (loss) contributed from acquired properties |  |  |  | $ (3,100) |
2045 Pacific Highway, San Diego, CA | Development properties |  |  |  |  |
Schedule of Asset Acquisitions, by Acquisition [Line Items] |  |  |  |  |
Purchase price |  |  | $ 42,000 |  |
Accrued environmental remediation liabilities |  |  | $ 5,200 |  |
200 West 6th Street, Austin, TX |  |  |  |  |
Schedule of Asset Acquisitions, by Acquisition [Line Items] |  |  |  |  |
Rentable square feet (unaudited) | ft² |  |  |  | 0 |
200 West 6th Street, Austin, TX | Development properties |  |  |  |  |
Schedule of Asset Acquisitions, by Acquisition [Line Items] |  |  |  |  |
Purchase price |  | $ 580,200 |  |  |
Ground lease liabilities |  | 46,400 |  |  |
Ground lease right-of-use-asset |  | $ 46,400 |  |  |
Discount rate |  | 3.97% |  |  |

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