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Investments in Unconsolidated Real Estate Ventures - Narratives (Details) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2024 USD ($) building property	Jun. 30, 2023 USD ($)	Jun. 30, 2024 USD ($) building property	Jun. 30, 2023 USD ($)	Feb. 13, 2024 USD ($)	Dec. 31, 2023 USD ($) building
Schedule of Equity Method Investments
Number of Real Estate Properties | property	40		40
Total investments in unconsolidated real estate ventures	$ 101,043		$ 101,043			$ 264,281
Difference between the investments in unconsolidated real estate ventures and the net book value of the underlying assets	$ 9,600		$ 9,600			$ 8,700
One Commercial Building
Schedule of Equity Method Investments
Number of Real Estate Properties | building	1		1			1
Subordinated interest	10.00%		10.00%			10.00%
Prudential Global Investment Management (PGIM)
Schedule of Equity Method Investments
Total investments in unconsolidated real estate ventures	$ 724		$ 724			$ 163,375
Prudential Global Investment Management (PGIM) | Central Place Tower | Disposed of by Sale
Schedule of Equity Method Investments
Gross sales price	325,000		325,000		$ 325,000
Investments in Unconsolidated Real Estate Ventures
Schedule of Equity Method Investments
Property management fee revenue	4,100	$ 5,600	8,700	$ 10,800
Canadian Pension Plan Investment Board (CPPIB) | 1101 17th Street
Schedule of Equity Method Investments
Total investments in unconsolidated real estate ventures	0		0			0
CBREI Venture
Schedule of Equity Method Investments
Total investments in unconsolidated real estate ventures	174		174			180
CBREI Venture | Foundry
Schedule of Equity Method Investments
Total investments in unconsolidated real estate ventures	0		0			0
Landmark
Schedule of Equity Method Investments
Total investments in unconsolidated real estate ventures	575		575			605
Landmark | L'Enfant Plaza Assets
Schedule of Equity Method Investments
Total investments in unconsolidated real estate ventures	0		0			0
Certain Ventures
Schedule of Equity Method Investments
Total investments in unconsolidated real estate ventures	$ 0		$ 0			$ 0

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 323
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-Name Accounting Standards Codification
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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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