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Investments in Unconsolidated Real Estate Ventures - Narratives (Details) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2024 USD ($) property building	Sep. 30, 2023 USD ($)	Sep. 30, 2024 USD ($) property building	Sep. 30, 2023 USD ($)	Feb. 13, 2024 USD ($)	Dec. 31, 2023 USD ($) building
Investments in Unconsolidated Real Estate Ventures
Number of Real Estate Properties | property	41		41
Total investments in unconsolidated real estate ventures	$ 100,682		$ 100,682			$ 264,281
Difference between the investments in unconsolidated real estate ventures and the net book value of the underlying assets	$ 10,300		$ 10,300			$ 8,700
One Commercial Building
Investments in Unconsolidated Real Estate Ventures
Number of Real Estate Properties | building	1		1			1
Subordinated interest	10.00%		10.00%			10.00%
Prudential Global Investment Management (PGIM)
Investments in Unconsolidated Real Estate Ventures
Total investments in unconsolidated real estate ventures	$ 664		$ 664			$ 163,375
Prudential Global Investment Management (PGIM) | Central Place Tower | Disposed of by Sale
Investments in Unconsolidated Real Estate Ventures
Gross sales price	325,000		325,000		$ 325,000
Investments in Unconsolidated Real Estate Ventures
Investments in Unconsolidated Real Estate Ventures
Property management fee revenue	4,400	$ 5,400	13,000	$ 16,300
Canadian Pension Plan Investment Board (CPPIB) | 1101 17th Street
Investments in Unconsolidated Real Estate Ventures
Total investments in unconsolidated real estate ventures	0		0			0
CBREI Venture
Investments in Unconsolidated Real Estate Ventures
Total investments in unconsolidated real estate ventures	175		175			180
CBREI Venture | Foundry
Investments in Unconsolidated Real Estate Ventures
Total investments in unconsolidated real estate ventures	0		0			0
Landmark
Investments in Unconsolidated Real Estate Ventures
Total investments in unconsolidated real estate ventures	560		560			605
Landmark | L'Enfant Plaza Assets
Investments in Unconsolidated Real Estate Ventures
Total investments in unconsolidated real estate ventures	0		0			0
Certain Ventures
Investments in Unconsolidated Real Estate Ventures
Total investments in unconsolidated real estate ventures	$ 0		$ 0			$ 0

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