Real Estate Properties - Unconsolidated Joint Ventures (Details) $ in Thousands	3 Months Ended
Mar. 31, 2023 USD ($) ft² joint_venture property	Dec. 31, 2022 USD ($)
Real Estate [Line Items]
Number of joint ventures \| joint_venture	2
Unconsolidated Joint Ventures
Real Estate [Line Items]
Number of properties (in properties) \| property	3
Investment at carrying value	$ 36,558	$ 35,129
Rentable Square Feet (in square feet) \| ft²	444,000
Unamortized basis difference	$ 6,367
Unconsolidated Joint Ventures \| Mortgages
Real Estate [Line Items]
Interest rate (as a percent)	3.93%
Principal balance	$ 82,000	82,000
Unconsolidated Joint Ventures \| Prosperity Metro Plaza
Real Estate [Line Items]
Number of properties (in properties) \| property	2
Ownership percentage	51.00%
Investment at carrying value	$ 19,001	19,237
Rentable Square Feet (in square feet) \| ft²	329,000
Unconsolidated Joint Ventures \| Prosperity Metro Plaza \| Mortgages
Real Estate [Line Items]
Interest rate (as a percent)	4.09%
Principal balance	$ 50,000	50,000
Unconsolidated Joint Ventures \| 1750 H Street, NW
Real Estate [Line Items]
Number of properties (in properties) \| property	1
Ownership percentage	50.00%
Investment at carrying value	$ 17,557	15,892
Rentable Square Feet (in square feet) \| ft²	115,000
Unconsolidated Joint Ventures \| 1750 H Street, NW \| Mortgages
Real Estate [Line Items]
Interest rate (as a percent)	3.69%
Principal balance	$ 32,000	$ 32,000

Number Of Joint Ventures

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Area of a real estate property.

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Face (par) amount of debt instrument at time of issuance.

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Contractual interest rate for funds borrowed, under the debt agreement.

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Difference between amount at which an investment accounted for under the equity method of accounting is carried (reported) on the balance sheet and amount of underlying equity in net assets the reporting Entity has in the investee.

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The percentage of ownership of common stock or equity participation in the investee accounted for under the equity method of accounting.

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The number of real estate properties owned as of the balance sheet date.

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