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Transactions with Curbline Properties - Additional Information (Detail) - USD ($) |  | 12 Months Ended
--- | --- | ---
Oct. 01, 2024 | Dec. 31, 2024 | Dec. 31, 2023 | Dec. 31, 2022
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Estimated cost of redevelopment projects |  | $ 33,700,000 |  |  |
Transaction costs and other expense |  | $ 2,184,000 |  | $ 836,000 | $ 1,949,000
Fee percentage of aggregate amount of gross revenue |  | 2.00% |  |  |
Amounts receivable from curbline |  | $ 1,800,000 |  |  |
Amounts payable to curbline |  | 33,800,000 |  |  |
General and administrative |  | 47,080,000 |  | 50,867,000 | 46,564,000
Fee and other income |  | 8,181,000 |  | 8,553,000 | 14,966,000
Accounts payable and other liabilities |  | 81,723,000 |  | 162,490,000 |
Termination fee paid | $ 12,000,000 |  |  |  |
Shared Services Agreement [Member] |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Transaction costs and other expense |  | 500,000 |  |  |
Fee percentage of aggregate amount of gross revenue | 2.00% |  |  |  |
Separate fee amount related to the provision of services | $ 0 |  |  |  |
Agreement expiring date | Oct. 01, 2027 |  |  |  |
Description of event of certain early terminations | In the event of certain early terminations of the Shared Services Agreement, the Company will be obligated to pay a termination fee to the Operating Partnership equal to $2.5 million multiplied by the number of whole or partial fiscal quarters remaining in the Shared Services Agreement’s three-year term (or $12.0 million in the event the Company terminates the agreement for convenience on its second anniversary). |  |  |  |
Fee and other income |  | 500,000 |  |  |
Termination fee paid | $ 2,500,000 |  |  |  |
Termination term | 3 years |  |  |  |
Other [Member] |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Fee and other income |  | 600,000 |  |  |
Separation and Distributions Agreement [Member] |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Estimated cost of redevelopment projects |  | 32,900,000 |  |  |
Curbline [Member] |  |  |  |  |
Collaborative Arrangement and Arrangement Other than Collaborative [Line Items] |  |  |  |  |
Transaction costs and other expense |  | 30,879,000 | [1] | $ 2,376,000 | $ 10,000
Incremental fair value of services provided to Curbline |  | $ 500,000 |  |  |
[1] | Through September 30, 2024.

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