Financial Instruments and Fair Value Measurements - Schedule of Items Measured at Fair Value on Nonrecurring Basis (Parenthetical) (Details) $ in Millions	12 Months Ended
Dec. 31, 2024 USD ($)
Real Estate [Line Items]
Impairment charge	$ 0.4
1964 Union Street San Francisco, CA
Real Estate [Line Items]
Aggregate fair value	2.4
Mark Plaza Edwardsville, PA
Real Estate [Line Items]
Aggregate fair value	$ 2.4
Fair Value, Measurements, Nonrecurring \| 1964 Union Street San Francisco, CA \| Discounted Cash Flow Analysis
Real Estate [Line Items]
Discount rate	7.75%
Fair Value, Measurements, Nonrecurring \| 1964 Union Street San Francisco, CA \| Discounted Cash Flow Analysis \| Minimum
Real Estate [Line Items]
Capitalization rate	4.75%
Fair Value, Measurements, Nonrecurring \| 1964 Union Street San Francisco, CA \| Discounted Cash Flow Analysis \| Maximum
Real Estate [Line Items]
Capitalization rate	5.75%
Fair Value, Measurements, Nonrecurring \| Mark Plaza Edwardsville, PA \| Discounted Cash Flow Analysis
Real Estate [Line Items]
Discount rate	7.75%
Fair Value, Measurements, Nonrecurring \| Mark Plaza Edwardsville, PA \| Discounted Cash Flow Analysis \| Minimum
Real Estate [Line Items]
Capitalization rate	4.75%
Fair Value, Measurements, Nonrecurring \| Mark Plaza Edwardsville, PA \| Discounted Cash Flow Analysis \| Maximum
Real Estate [Line Items]
Capitalization rate	5.75%
Fair Value, Measurements, Nonrecurring \| 146 Geary Street, San Francisco, CA \| Discounted Cash Flow Analysis
Real Estate [Line Items]
Discount rate	7.75%
Fair Value, Measurements, Nonrecurring \| 146 Geary Street, San Francisco, CA \| Discounted Cash Flow Analysis \| Minimum
Real Estate [Line Items]
Capitalization rate	4.75%
Fair Value, Measurements, Nonrecurring \| 146 Geary Street, San Francisco, CA \| Discounted Cash Flow Analysis \| Maximum
Real Estate [Line Items]
Capitalization rate	5.75%

Capitalization rate.

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- Definition

Discount rate

+ References

No definition available.

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- Definition

The aggregate fair value of additional assets that would be required to be posted as collateral for derivative instruments with credit-risk-related contingent features if the credit-risk-related contingent features were triggered at the end of the reporting period.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Name Accounting Standards Codification
-Topic 815
-SubTopic 10
-Section 50
-Paragraph 4H
-Subparagraph (e)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480434/815-10-50-4H

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- Definition

The charge against earnings resulting from the write down of long lived assets other than goodwill due to the difference between the carrying value and lower fair value.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 230
-SubTopic 10
-Name Accounting Standards Codification
-Section 45
-Paragraph 28
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482740/230-10-45-28

Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 360
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (b)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147482099/360-10-50-2

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 976
-SubTopic 310
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147477332/976-310-50-1

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