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INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - MAP Venture (Details) |  | 3 Months Ended | 9 Months Ended |  |  |
--- | --- | --- | --- | --- | --- | ---
Jun. 28, 2024 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2024 USD ($) | Sep. 30, 2023 USD ($) | Jun. 30, 2024 USD ($) | Jun. 28, 2024 | Jun. 28, 2024 joint_venture | Jun. 28, 2024 property | Jun. 28, 2024 portfolioAsset | Dec. 31, 2023 USD ($)
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Investment in real estate ventures |  | $ 602,700,000 |  | $ 602,700,000 |  |  |  |  |  |  | $ 552,494,000
Debt, net |  | 2,261,773,000 |  | 2,261,773,000 |  |  |  |  |  |  | $ 2,138,832,000
Net gain on real estate venture transactions |  | 770,000 | $ 0 | 54,503,000 | $ 181,000 |  |  |  |  |  |
MAP Venture |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Number of unconsolidated joint ventures | joint_venture |  |  |  |  |  |  |  | 1 |  |  |
Real estate investments, joint ventures, net | $ 52,200,000 |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  |  |  | 50.00% |  |  |  |
Investment in real estate ventures |  |  |  |  |  | $ 0 |  |  |  |  |
Number of office properties owned | property |  |  |  |  |  |  |  |  | 57 |  |
Net gain on real estate venture transactions | 53,800,000 |  |  |  |  |  |  |  |  |  |
MAP Venture | Funding For Tenant And Capital Improvement Of Properties |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Other commitments |  | $ 12,000,000 |  | $ 12,000,000 |  |  |  |  |  |  |
MAP Venture | Fixed rate debt |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt instrument, interest rate, stated percentage |  | 8.00% |  | 8.00% |  |  |  |  |  |  |
MAP Venture | Nonrecourse Mortgage Loan | Fixed rate debt |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Debt, net | $ 154,600,000 |  |  |  |  |  |  |  |  |  |
MAP Venture | MAP Venture | Nonrecourse Mortgage Loan | Fixed rate debt |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Basis spread on interest rate (as percent) | 2.75% |  |  |  |  |  |  |  |  |  |
Lender residual entitlement percentage |  |  |  |  |  |  | 95.00% |  |  |  |
KB Joint Venture |  |  |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |  |  |
Equity method investment, ownership percentage |  |  |  |  |  |  | 50.00% |  |  |  |
Investment in real estate ventures | $ 26,000,000 |  |  |  |  |  |  |  |  |  |
Number of properties contributed to joint venture |  |  |  |  |  |  |  |  | 14 | 14 |

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