Leases - Lessee (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2024 USD ($) option	Dec. 31, 2023 USD ($)	Dec. 31, 2022 USD ($)	Jan. 31, 2022 USD ($) option
Lessee, Lease, Description [Line Items]
Right-of-use asset	$ 16,571
Lease liability	$ 20,861
Operating Lease, Right-of-Use Asset, Statement of Financial Position [Extensible List]	Other assets
Operating Lease, Liability, Statement of Financial Position [Extensible List]	Amounts due to Vornado
Operating leases, rent expense	$ 2,161	$ 2,161	$ 2,161
Operating lease, payments	$ 800	$ 800	$ 800
Flushing
Lessee, Lease, Description [Line Items]
Number of extension options (option) | option	1			1
Lessee, operating lease, renewal term (years)	10 years			10 years
Right-of-use asset				$ 16,000
Lease liability				$ 16,000
Weighted average discount rate (percentage)				5.86%