Revenue Recognition - Additional Information (Details) ft² in Thousands			3 Months Ended		6 Months Ended	9 Months Ended
	May 03, 2024 USD ($) ft²	Dec. 03, 2022 USD ($) ft²	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Mar. 31, 2024 USD ($)	Sep. 30, 2024 USD ($)	Sep. 30, 2023 USD ($)	Jun. 30, 2024 USD ($)	Dec. 31, 2023 USD ($)
Disaggregation of Revenue [Line Items]
Rental revenues			$ 55,675,000	$ 55,413,000		$ 170,464,000	$ 162,027,000
Incentive from lessor			$ 113,618,000			113,618,000			$ 0
Bloomberg | 731 Lexington Avenue Property
Disaggregation of Revenue [Line Items]
Area of property (in sqft.) | ft²	947
Term	11 years
Payments for lease commissions	$ 32,000,000
Incentive from lessor	113,618,000
Deferred lease incentive asset								$ 113,618,000
Bloomberg | 731 Lexington Avenue Property | Third Party Broker
Disaggregation of Revenue [Line Items]
Payments for lease commissions	26,500,000
Bloomberg | 731 Lexington Avenue Property | Vornado
Disaggregation of Revenue [Line Items]
Payments for lease commissions	$ 5,500,000
IKEA | Rego Park 1 Property
Disaggregation of Revenue [Line Items]
Area of property (in sqft.) | ft²		112
Payment for termination of lease		$ 10,000,000			$ 10,000,000
Customer concentration | Revenue | Bloomberg
Disaggregation of Revenue [Line Items]
Rental revenues						$ 93,179,000	$ 89,863,000
Percentage rent contributed by tenant						55.00%	55.00%