Significant Accounting Policies - Investment in Commercial Real Estate Properties - Additional Information (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2025	Sep. 30, 2024	Sep. 30, 2025	Sep. 30, 2024
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Rental revenue decrease from amortization of acquired leases	$ 1.5	$ 0.8	$ 4.6	$ 1.7
760 Madison Avenue
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Write down of value in leasehold interest			$ 8.5
Below-Market Leases | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated useful life of other intangible assets (in years)	1 year		1 year
Below-Market Leases | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated useful life of other intangible assets (in years)	15 years		15 years
Above-Market Leases | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated useful life of other intangible assets (in years)	1 year		1 year
Above-Market Leases | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated useful life of other intangible assets (in years)	15 years		15 years
In-Place Leases | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated useful life of other intangible assets (in years)	1 year		1 year
In-Place Leases | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated useful life of other intangible assets (in years)	15 years		15 years
Building | Minimum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated useful life (in years)	3 years		3 years
Building | Maximum
New Accounting Pronouncements or Change in Accounting Principle [Line Items]
Estimated useful life (in years)	40 years		40 years