Derivative Instruments and Hedging Activities (Details) - Interest Rate Swap - USD ($) $ in Thousands	6 Months Ended
Jun. 30, 2024	Dec. 31, 2023
Derivative [Line Items]
Derivative, Notional Amount	$ 900,000
Fair Value Hedge Assets	$ 12,070	$ 1,976
325 Main Street, 355 Main Street, 90 Broadway and Kendall Center Green Garage Properties [Member]
Derivative [Line Items]
Derivative, Swap Type	Interest Rate Swaps
Derivative, Notional Amount	$ 600,000
Derivative, Maturity Date	Oct. 26, 2028
Fair Value Hedge Assets	$ 6,768
Santa Monica Business Park [Member]
Derivative [Line Items]
Derivative, Swap Type	Interest Rate Swaps
Derivative, Notional Amount	$ 300,000
Derivative, Maturity Date	Apr. 01, 2025
Fair Value Hedge Assets	$ 5,302
Minimum [Member] \| 325 Main Street, 355 Main Street, 90 Broadway and Kendall Center Green Garage Properties [Member]
Derivative [Line Items]
Derivative, Fixed Interest Rate	3.79%
Minimum [Member] \| Santa Monica Business Park [Member]
Derivative [Line Items]
Derivative, Fixed Interest Rate	2.661%
Maximum [Member] \| 325 Main Street, 355 Main Street, 90 Broadway and Kendall Center Green Garage Properties [Member]
Derivative [Line Items]
Derivative, Fixed Interest Rate	3.798%
Maximum [Member] \| Santa Monica Business Park [Member]
Derivative [Line Items]
Derivative, Fixed Interest Rate	2.688%

Fair value of all asset derivatives designated as cash flow hedging instruments.

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