Consolidated Statements of Income - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2022	Dec. 31, 2021	Dec. 31, 2020
REVENUES
Revenues	$ 205,814	$ 206,148	$ 199,142
EXPENSES
Operating, including fees to Vornado of $6,037, $5,952 and $5,429, respectively	(90,446)	(91,089)	(88,403)
Depreciation and amortization	(29,797)	(32,938)	(32,357)
General and administrative, including management fees to Vornado of $2,440, $2,380 and $2,380, respectively	(6,106)	(5,924)	(6,307)
Total expenses	(126,349)	(129,951)	(127,067)
Interest and other income, net	6,769	639	2,667
Interest and debt expense	(28,602)	(19,686)	(24,204)
Change in fair value of marketable securities	0	3,482	(8,599)
Net gains on sale of real estate	0	69,950	0
Income from continuing operations	57,632	130,582	41,939
Income from discontinued operations (see Note 7)	0	2,348	0
Net income	$ 57,632	$ 132,930	$ 41,939
Income per common share - basic and diluted:
Income from continuing operations, basic (usd per share)	$ 11.24	$ 25.48	$ 8.19
Income from continuing operations, diluted (usd per share)	11.24	25.48	8.19
Income from discontinued operations (see Note 7), basic (usd per share)	0	0.46	0
Income from discontinued operations (see Note 7), diluted (usd per share)	0	0.46	0
Net income per common share, diluted (in dollars per share)	11.24	25.94	8.19
Net income per common share, basic (usd per share)	$ 11.24	$ 25.94	$ 8.19
Weighted average shares outstanding - basic (in shares)	5,126,100	5,123,613	5,120,922
Weighted average shares outstanding - diluted (in shares)	5,126,100	5,123,613	5,120,922