Acquisition, Dispositions and Assets Held for Sale - Summary of assets held for sale (Details) ft² in Thousands, $ in Thousands	Sep. 30, 2022 USD ($)	Dec. 31, 2021 USD ($) ft²
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets held for sale	$ 0	$ 73,876
Disposal Group, Held-for-sale | Pen Place - Land Parcel | Arlington, Virginia
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Area of real estate property | ft²		2,082
Assets held for sale		$ 73,876