Related Party Transactions - Excluded Properties and Businesses (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2023 USD ($) property office_property interest	Dec. 31, 2022 USD ($)	Dec. 31, 2021 USD ($)
Related Party Transaction [Line Items]
Revenues \| $	$ 739,572	$ 727,041	$ 624,094
Office Building
Related Party Transaction [Line Items]
Number of properties \| office_property	11
Office Building \| Manhattan
Related Party Transaction [Line Items]
Number of properties \| office_property	9
Malkin Group \| Mezzanine and Senior Equity Funds
Related Party Transaction [Line Items]
Number of interests owned \| interest	1
Malkin Group \| Residential Property Manager
Related Party Transaction [Line Items]
Number of properties	3
Number of interests owned \| interest	3
Malkin Group \| Multi-family Property \| Greenwich, Connecticut
Related Party Transaction [Line Items]
Number of properties	7
Malkin Group \| Retail Site \| Greenwich, Connecticut
Related Party Transaction [Line Items]
Number of properties	5
Malkin Group \| Retail Site \| Manhattan
Related Party Transaction [Line Items]
Number of properties	2
Malkin Group \| Retail Site \| Westport, Connecticut \| Disposal Group, Disposed of by Sale, Not Discontinued Operations \| 69-97 and 103-107 Main Street, Westport, Connecticut
Related Party Transaction [Line Items]
Number of properties	2
Malkin Group \| Former Post Office \| Greenwich, Connecticut
Related Party Transaction [Line Items]
Number of properties	1
Malkin Group \| Office Building \| Manhattan
Related Party Transaction [Line Items]
Number of properties	1
Affiliated Entity \| Supervisory fee revenue
Related Party Transaction [Line Items]
Revenues \| $	$ 900	1,000	1,000
Affiliated Entity \| Property management fee revenue
Related Party Transaction [Line Items]
Revenues \| $	$ 300	$ 300	$ 200

Empire State Realty OP, L.P. 10-K/A