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Derivative Instruments and Hedging Activities (Details) - Interest Rate Swap - USD ($) $ in Thousands | 9 Months Ended |  |
--- | --- | --- | ---
Sep. 30, 2024 | Sep. 27, 2024 | Dec. 31, 2023
Derivative [Line Items] |  |  |
Derivative, Notional Amount | $ 900,000 |  |
Cash Flow Hedges Derivative Instruments at Fair Value, Net | $ (10,191) |  | $ 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 |  |
Cash Flow Hedge Derivative Instrument Liabilities at Fair Value | $ (12,600) |  |
325 Main Street, 355 Main Street, 90 Broadway and Kendall Center Green Garage Properties and 2024 Unsecured Term Loan |  |  |
Derivative [Line Items] |  |  |
Derivative, Notional Amount | 700,000 |  |
Cash Flow Hedges Derivative Instruments at Fair Value, Net | $ (11,801) |  |
Santa Monica Business Park [Member] |  |  |
Derivative [Line Items] |  |  |
Derivative, Swap Type | Interest Rate Swaps |  |
Derivative, Notional Amount | $ 200,000 |  |
Derivative, Maturity Date | Apr. 01, 2025 |  |
Fair Value Hedge Assets | $ 1,610 |  |
2024 Unsecured Term Loan |  |  |
Derivative [Line Items] |  |  |
Derivative, Swap Type | Interest Rate Swaps |  |
Derivative, Notional Amount | $ 100,000 |  |
Derivative, Maturity Date | Apr. 01, 2025 |  |
Derivative, Fixed Interest Rate |  | 2.688% |
Fair Value Hedge Assets | $ 799 |  |
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] | 2024 Unsecured Term Loan |  |  |
Derivative [Line Items] |  |  |
Derivative, Fixed Interest Rate | 2.688% |  |
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] | 2024 Unsecured Term Loan |  |  |
Derivative [Line Items] |  |  |
Derivative, Fixed Interest Rate | 2.688% |  |

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