Consolidated Balance Sheets (Unaudited) - USD ($) $ in Thousands	Sep. 30, 2025	Dec. 31, 2024
Real Estate Investment Property, at Cost [Abstract]
Land	$ 32,271	$ 32,271
Buildings and leasehold improvements	1,065,198	1,046,132
Development and construction in progress	4,869	6,794
Total	1,102,338	1,085,197
Accumulated depreciation and amortization	(466,619)	(443,627)
Real estate, net	635,719	641,570
Cash and cash equivalents	286,142	338,532
Restricted cash	66,116	55,304
Tenant and other receivables	4,341	5,112
Receivable arising from the straight-lining of rents	109,645	111,750
Deferred leasing costs, net, including unamortized leasing fees to Vornado of $21,077 and $22,380, respectively	155,381	163,677
Other assets	38,896	25,350
Total assets	1,296,240	1,341,295
LIABILITIES AND EQUITY
Mortgages payable, net of deferred debt issuance costs	987,100	988,019
Accounts payable and accrued expenses	44,992	38,743
Lease incentive liabilities	113,618	115,118
Total liabilities	1,167,914	1,164,436
Commitments and contingencies
Preferred stock: $1.00 par value per share; authorized, 3,000,000 shares; issued and outstanding, none	0	0
Common stock: $1.00 par value per share; authorized, 10,000,000 shares; issued, 5,173,450 shares; outstanding, 5,107,290 shares	5,173	5,173
Additional capital	35,159	34,765
Retained earnings	88,488	133,402
Accumulated other comprehensive (loss) income	(126)	3,887
Equity before treasury stock	128,694	177,227
Treasury stock: 66,160 shares, at cost	(368)	(368)
Total equity	128,326	176,859
Total liabilities and equity	1,296,240	1,341,295
Related Party
LIABILITIES AND EQUITY
Other liabilities	499	1,159
Nonrelated Party
LIABILITIES AND EQUITY
Other liabilities	$ 21,705	$ 21,397