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RELATED-PARTY TRANSACTIONS - Affiliate Investments and Other Narrative (Details) | 1 Months Ended | 3 Months Ended | 9 Months Ended |  |
--- | --- | --- | --- | --- | ---
Oct. 31, 2023 USD ($) ft² | Feb. 28, 2023 USD ($) ft² | Feb. 28, 2022 USD ($) | Sep. 30, 2025 USD ($) ft² | Sep. 30, 2024 USD ($) | Sep. 30, 2025 USD ($) ft² | Sep. 30, 2024 USD ($) | Oct. 31, 2024 | May 15, 2019 ft²
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Payments to acquire equity method investment |  |  |  |  |  | $ 1,209,000 | $ 1,463,000 |  |
Rental and other property income |  |  |  | $ 16,162,000 | $ 18,150,000 | 49,161,000 | 56,172,000 |  |
Income from unconsolidated entities |  |  |  | $ (697,000) | (1,239,000) | (2,285,000) | (442,000) |  |
Corporate Joint Venture | Eleven Year Lease |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Lease, term of contract with related party |  |  |  |  |  |  |  |  | 11 years
Rentable area (square feet) | ft² |  |  |  |  |  |  |  |  | 30,000
Affiliated Entity |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Consolidated net worth |  |  |  |  |  | 105,000,000.0 |  |  |
Liquid assets |  |  |  |  |  | $ 6,000,000.0 |  |  |
1910 Sunset Boulevard |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Payments to acquire equity method investment |  |  | $ 22,400,000 |  |  |  |  |  |
Ownership Interest |  |  |  | 44.20% |  | 44.20% |  |  |
1910 Sunset Boulevard | Office Building |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Rentable area (square feet) | ft² |  |  |  | 105,064 |  | 105,064 |  |  |
1910 Sunset Boulevard | Corporate Joint Venture |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Payments to acquire equity method investment |  |  | $ 51,000,000 |  |  |  |  |  |
1902 Park Avenue |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Ownership Interest |  |  |  | 25.50% |  | 25.50% |  |  |
1902 Park Avenue | Corporate Joint Venture |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Purchase price |  | $ 19,100,000 |  |  |  |  |  |  |
Ownership Interest |  | 50.00% |  |  |  |  |  | 25.50% |
1015 N Mansfield Avenue |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Ownership Interest |  |  |  | 28.80% |  | 28.80% |  |  |
1015 N Mansfield Avenue | Office Building |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Rentable area (square feet) | ft² |  |  |  | 44,141 |  | 44,141 |  |  |
1015 N Mansfield Avenue | Corporate Joint Venture |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Purchase price | $ 18,000,000 |  |  |  |  |  |  |  |
Ownership Interest | 28.80% |  |  |  |  |  |  |  |
Percentage of ownership acquired | 100.00% |  |  |  |  |  |  |  |
Income from unconsolidated entities |  |  |  | $ (697,000) | (1,200,000) | $ (2,300,000) | (442,000) |  |
1015 N Mansfield Avenue | Corporate Joint Venture | Office Building |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Area of land (square feet) | ft² | 44,141 |  |  |  |  |  |  |  |
4750 Wilshire Boulevard |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Ownership Interest |  |  |  | 20.00% |  | 20.00% |  |  |
4750 Wilshire Boulevard | Office Building |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Rentable area (square feet) | ft² |  | 30,335 |  | 30,335 |  | 30,335 |  |  |
4750 Wilshire JV | Eleven Year Lease |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Ownership Interest |  |  |  |  |  |  |  |  | 20.00%
4750 Wilshire JV | Corporate Joint Venture | Eleven Year Lease |  |  |  |  |  |  |  |  |
Related Party Transaction [Line Items] |  |  |  |  |  |  |  |  |
Income from unconsolidated entities |  |  |  | $ 85,000 | $ 84,000 | $ 251,000 | $ 248,000 |  |

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