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Investments in Unconsolidated Joint Ventures (Statements of Operations of the Joint Ventures) (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Sep. 30, 2025 | Sep. 30, 2024 | Sep. 30, 2025 | Sep. 30, 2024 | Sep. 17, 2025
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Total revenue |  | $ 871,510 |  | $ 859,227 | $ 2,605,182 |  | $ 2,549,148 |  |
Expenses |  |  |  |  |  |  |  |  |
Transaction costs |  | 1,431 |  | 188 | 2,556 |  | 890 |  |
Depreciation and amortization |  | 236,147 |  | 222,890 | 680,073 |  | 661,148 |  |
Total expenses |  | 618,951 |  | 597,809 | 1,847,975 |  | 1,790,774 |  |
Other income (expense) |  |  |  |  |  |  |  |  |
Loss from early extinguishment of debt |  | 0 |  | 0 | (338) |  | 0 |  |
Interest expense |  | (164,299) |  | (163,194) | (490,526) |  | (474,727) |  |
Loss on sales-type lease |  | 0 |  | 0 | (2,490) |  | 0 |  |
Gains on sales of real estate |  | 1,932 |  | 517 | 20,322 |  | 517 |  |
Net income (loss) |  | (116,840) |  | 108,452 | 89,206 |  | 322,005 |  |
Income (loss) from unconsolidated joint ventures |  | $ (148,329) |  | (7,011) | $ (153,792) |  | 6,376 |  |
Rosecrans-Sepulveda Partners 4, LLC |  |  |  |  |  |  |  |  |
Other income (expense) |  |  |  |  |  |  |  |  |
Ownership Percentage |  | 50.00% | [1] |  | 50.00% | [1] |  |  | 50.00%
Unconsolidated Joint Ventures [Member] |  |  |  |  |  |  |  |  |
Schedule of Equity Method Investments [Line Items] |  |  |  |  |  |  |  |  |
Total revenue | [2] | $ 128,190 |  | 128,435 | $ 384,309 |  | 378,981 |  |
Expenses |  |  |  |  |  |  |  |  |
Operating |  | 56,578 |  | 53,280 | 165,497 |  | 148,929 |  |
Transaction costs |  | 2 |  | 53 | 173 |  | 61 |  |
Depreciation and amortization |  | 45,409 |  | 41,082 | 131,940 |  | 118,901 |  |
Total expenses |  | 101,989 |  | 94,415 | 297,610 |  | 267,891 |  |
Other income (expense) |  |  |  |  |  |  |  |  |
Loss from early extinguishment of debt |  | 0 |  | 0 | (62) |  | 0 |  |
Interest expense |  | (47,202) |  | (45,244) | (136,738) |  | (132,106) |  |
Unrealized loss on derivative instruments |  | 1,403 |  | 19,172 | 14,632 |  | 8,212 |  |
Gains on sales of real estate |  | 4,762 | [3] | 0 | 4,762 | [3] | 0 |  |
Net income (loss) |  | (17,642) |  | (30,396) | (59,971) |  | (29,228) |  |
Company's share of net income (loss) |  | (6,613) | [3] | (9,319) | (20,099) | [3] | (9,105) |  |
Gain on sale / consolidation |  | 0 |  | 0 | 0 |  | 21,696 | [4] |
Equity Method Investment, Other-than-Temporary Impairment |  | (145,133) | [5] | 0 | (145,133) | [5] | 0 |  |
Basis differential | [6] | 3,417 | [3] | 2,308 | 11,440 | [3] | (6,215) |  |
Income (loss) from unconsolidated joint ventures |  | (148,329) |  | (7,011) | (153,792) |  | 6,376 |  |
Straight Line Rent Adjustments |  | 3,700 |  | 2,600 | 12,400 |  | 16,500 |  |
Unconsolidated Joint Ventures [Member] | Rosecrans-Sepulveda Partners 4, LLC |  |  |  |  |  |  |  |  |
Other income (expense) |  |  |  |  |  |  |  |  |
Gains on sales of real estate |  | 2,200 |  |  |  |  |  |  |
Unconsolidated Joint Ventures [Member] | Basis Differential |  |  |  |  |  |  |  |  |
Expenses |  |  |  |  |  |  |  |  |
Depreciation and amortization |  | (3,100) |  | 3,900 | (7,400) |  | 6,800 |  |
Other income (expense) |  |  |  |  |  |  |  |  |
Unrealized loss on derivative instruments |  | $ 400 |  | $ 5,100 | 3,900 |  | $ 4,900 |  |
Unconsolidated Joint Ventures [Member] | Joint Venture Partner [Member] | 901 New York Avenue LLC [Member] |  |  |  |  |  |  |  |  |
Other income (expense) |  |  |  |  |  |  |  |  |
Ownership Percentage |  |  |  | 50.00% |  |  | 50.00% |  |
Unconsolidated Joint Ventures [Member] | Company's Share [Member] | Rosecrans-Sepulveda Partners 4, LLC |  |  |  |  |  |  |  |  |
Other income (expense) |  |  |  |  |  |  |  |  |
Gains on sales of real estate |  |  |  |  | $ 2,200 |  |  |  |
[1] | On September 17, 2025, the joint venture completed the sale of Beach Cities Media Campus, a land parcel, located in El Segundo, California.
[2] | Includes straight-line rent adjustments of approximately $3.7 million and $2.6 million for the three months ended September 30, 2025 and 2024, respectively, and approximately $12.4 million and $16.5 million for the nine months ended September 30, 2025 and 2024, respectively.
[3] | During the three and nine months ended September 30, 2025, the joint venture recorded a gain on sale of real estate related to the Beach Cities Media Campus. As a result of the historical basis difference, the Company recognized a gain on sale of real estate totaling approximately $2.2 million, which consists of its share of the gain on sale reported by the joint venture as well as an adjustment for a basis differential.
[4] | During the nine months ended September 30, 2024, the Company acquired its joint venture partner’s 50% economic interest in 901 New York Avenue.
[5] | During the three and nine months ended September 30, 2025, the Company recognized an other-than-temporary impairment loss on its investment in Gateway Commons of approximately $145.1 million.
[6] | Includes depreciation and amortization of approximately $(3.1) million and $3.9 million for the three months ended September 30, 2025 and 2024, respectively, and approximately $(7.4) million and $6.8 million for the nine months ended September 30, 2025 and 2024, respectively. Includes unrealized losses on derivative instruments of approximately $0.4 million and $5.1 million for the three months ended September 30, 2025 and 2024, respectively, and approximately $3.9 million and $4.9 million for the nine months ended September 30, 2025 and 2024, respectively.

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