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Derivative Instruments and Hedging Activities (Details) - Interest Rate Swap - USD ($) $ in Thousands |  |  | 12 Months Ended |  |
--- | --- | --- | --- | --- | ---
Dec. 07, 2023 | May 02, 2023 | Dec. 31, 2023 | Dec. 14, 2023 | Dec. 31, 2022
Derivative [Line Items] |  |  |  |  |
Derivative, Notional Amount | $ 600,000 | $ 1,200,000 | $ 2,100,000 |  |
Derivative, Maturity Date |  | May 16, 2024 |  |  |
Fair Value Hedge Assets |  |  | $ 1,976 |  | $ 0
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 |  | $ 600,000 |  |
Derivative, Maturity Date | Oct. 26, 2028 |  | Oct. 26, 2028 |  |
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value |  |  | $ (7,198) |  |
Santa Monica Business Park [Member] |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, Swap Type |  |  | Interest Rate Swaps |  |
Derivative, Notional Amount |  |  | $ 300,000 | $ 300,000 |
Derivative, Maturity Date |  |  | Apr. 01, 2025 |  |
Fair Value Hedge Assets |  |  | $ 6,626 |  |
Three Two Five Main Street, Three Five Five Main Street, Ninety Broadway and Kendall Center Green Garage Properties and Unsecured Term Loan |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, Notional Amount |  |  | 1,800,000 |  |
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value |  |  | $ (4,650) |  |
2023 Unsecured Term Loan |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, Swap Type |  |  | Interest Rate Swaps |  |
Derivative, Notional Amount |  |  | $ 1,200,000 |  |
Derivative, Maturity Date |  |  | May 16, 2024 |  |
Fair Value Hedge Assets |  |  | $ 2,548 |  |
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% |  |
Minimum [Member] | 2023 Unsecured Term Loan |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, Fixed Interest Rate |  |  | 4.638% |  |
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% |  |
Maximum [Member] | 2023 Unsecured Term Loan |  |  |  |  |
Derivative [Line Items] |  |  |  |  |
Derivative, Fixed Interest Rate |  |  | 4.646% |  |

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