Consolidated Statements of Income (Unaudited) - USD ($) $ in Thousands	3 Months Ended		6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017	Jun. 30, 2018	Jun. 30, 2017
REVENUES
Property rentals	$ 38,618	$ 38,264	$ 76,859	$ 76,537
Expense reimbursements	19,635	18,926	39,274	37,882
Total revenues	58,253	57,190	116,133	114,419
EXPENSES
Operating, including fees to Vornado of $1,109, $1,091, $2,275 and $2,219, respectively	21,511	20,744	43,788	41,665
Depreciation and amortization	8,700	8,138	16,983	16,183
General and administrative, including management fees to Vornado of $595 and $1,190 in each three and six month period, respectively	1,689	1,696	2,950	2,852
Total expenses	31,900	30,578	63,721	60,700
OPERATING INCOME	26,353	26,612	52,412	53,719
Interest and other income, net	1,730	1,297	4,768	2,024
Interest and debt expense	(10,945)	(7,255)	(20,774)	(13,415)
Change in fair value of marketable securities (see Note 7)	433	0	(4,737)	0
Income before income taxes	17,571	20,654	31,669	42,328
Income tax (expense) benefit	(1)	6	(2)	(1)
Income from continuing operations	17,570	20,660	31,667	42,327
Loss from discontinued operations (see Note 8)	0	0	(23,797)	0
Net income	$ 17,570	$ 20,660	$ 7,870	$ 42,327
Income from continuing operations - basic and diluted (in usd per share)	$ 3.43	$ 4.04	$ 6.19	$ 8.28
Loss from discontinuing operations (see Note 8) - basic and diluted (in usd per share)	0.00	0.00	(4.65)	0.00
Net income per common share - basic and diluted (in usd per share)	$ 3.43	$ 4.04	$ 1.54	$ 8.28
Weighted average shares outstanding - basic and diluted	5,116,657	5,115,320	5,116,321	5,115,012
Dividends per common share (in usd per share)	$ 4.5	$ 4.25	$ 9	$ 8.5