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Leases Narrative (Details) $ in Thousands |  | 3 Months Ended | 9 Months Ended | 12 Months Ended | 21 Months Ended
--- | --- | --- | --- | --- | ---
Aug. 01, 2023 USD ($) ft² | Sep. 30, 2023 USD ($) | Sep. 30, 2023 USD ($) | Sep. 30, 2022 USD ($) | Dec. 31, 2022 USD ($) | Sep. 30, 2023 USD ($)
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |
Operating Lease, Payments |  |  |  | $ (282) | $ (447) |  |
Right of use assets - operating leases (amounts related to VIEs of $156,940 and $0 at September 30, 2023 and December 31, 2022, respectively) | [1] |  | $ 322,790 | 322,790 |  | $ 167,351 | $ 322,790
Lease liabilities - operating leases (amounts related to VIEs of $136,332 and $0 at September 30, 2023 and December 31, 2022, respectively) |  |  | 341,299 | 341,299 |  | 204,686 | 341,299
343 Madison Avenue | Consolidated Entities |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |
Consolidated Entities, Ownership Percentage |  | 0.55 |  |  |  |  |
Lessee, Operating Lease, Term of Contract |  | 99 years |  |  |  |  |
Land Subject to Ground Leases | ft² |  | 25,000 |  |  |  |  |
Lessee, Operating Lease, Option to Terminate |  | The joint venture has the option until July 31, 2025 to terminate the ground lease prior to construction of the new building and receive reimbursement of up to $117.0 million for the cost of the construction of Phase 1. |  |  |  |  |
Operating Leases, Future Minimum Payments, Due in Two Years |  | $ 21,800 |  |  |  |  |
Operating Leases, Future Minimum Payments, Due in Five Years |  | $ 10,900 |  |  |  |  |
Lessee, Operating Lease Payment Increase (Decrease) Term, Year |  | 5 years |  |  |  |  |
Lessee, Operating Lease Payment Increase (Decrease), Percentage |  | 1.10 |  |  |  |  |
Lessee, Operating Lease, Discount Rate |  | 8.41% |  |  |  |  |
Net Present Value and Operating Lease Liability |  | $ 134,500 |  |  |  |  |
Operating Lease, Payments |  |  |  | 10,000 |  | $ 15,000 | $ 25,000
Right of use assets - operating leases (amounts related to VIEs of $156,940 and $0 at September 30, 2023 and December 31, 2022, respectively) |  | 160,100 |  |  |  |  |
Lease liabilities - operating leases (amounts related to VIEs of $136,332 and $0 at September 30, 2023 and December 31, 2022, respectively) |  | 134,509 |  |  |  |  |
Operating lease costs |  |  | $ 5,000 | $ 5,000 |  |  |
343 Madison Avenue | Consolidated Entities | Scenario, Plan |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |
Recovery of Direct Costs |  | $ 117,000 |  |  |  |  |
343 Madison Avenue | Consolidated Entities | Construction | Scenario, Plan |  |  |  |  |  |  |
Lessee, Lease, Description [Line Items] |  |  |  |  |  |  |
Net Rentable Area (in sf) | ft² |  | 900,000 |  |  |  |  |
[1] | See Note 4.

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