INVESTMENT IN UNCONSOLIDATED REAL ESTATE VENTURES - MAP Venture (Details) $ in Thousands	Jun. 30, 2023 USD ($) ft² property	Dec. 31, 2022 USD ($)
Schedule of Equity Method Investments [Line Items]
Negative investment in real estate ventures	$ 589,195	$ 532,224
Variable Interest Entity, Not Primary Beneficiary | MAP Venture
Schedule of Equity Method Investments [Line Items]
Number of office properties owned | property	58
Rentable area (in square feet) | ft²	3,924,783
Number of properties subject to ground leases | property	58
Negative investment in real estate ventures	$ 41,300
Variable Interest Entity, Not Primary Beneficiary | MAP Venture | Secured fixed rate debt
Schedule of Equity Method Investments [Line Items]
Capitalized financing costs	$ 181,000