Investment in Unconsolidated Joint Ventures - Crawford Long—CPI, LLC (Details) - Crawford Long - CPI, LLC ft² in Thousands, $ in Millions	Dec. 31, 2021 USD ($) ft²
Schedule of Equity Method Investments [Line Items]
Ownership interest percentage	50.00%
Area of property \| ft²	358
Aggregate outstanding indebtedness	$ 64.6
Cash balance of joint venture	$ 2.0
Secured Mortgage Note Payable
Schedule of Equity Method Investments [Line Items]
Interest rate on mortgage loan (percent)	3.50%
Emory University
Schedule of Equity Method Investments [Line Items]
Ownership percentage of partner in joint venture	50.00%

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