Leases (Details) $ in Thousands	Mar. 31, 2024 USD ($) tenant renewalOption	Dec. 31, 2023 USD ($)
Lessee, Lease, Description [Line Items]
Lessor, number of tenants | tenant	2
Right-of-use asset	$ 2,138	$ 2,183
Lease liability	$ 2,280	$ 2,318
Ground Lease | Yonkers, NY
Lessee, Lease, Description [Line Items]
Number of renewals remaining | renewalOption	0
Remaining term	21 years 3 months 18 days
Corporate Office | Great Neck, NY
Lessee, Lease, Description [Line Items]
Renewal term option	5 years
Remaining term	12 years 9 months 18 days