Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		6 Months Ended
	Jun. 30, 2013	Jun. 30, 2012	Jun. 30, 2013	Jun. 30, 2012
REVENUES
Property rentals	$ 33,670	$ 33,482	$ 67,841	$ 67,255
Expense reimbursements	13,632	13,396	28,236	26,924
Total revenues	47,302	46,878	96,077	94,179
EXPENSES
Operating, including fees to Vornado of $1,002, $1,053, $1,984 and $2,085, respectively	14,476	14,198	30,030	28,739
Depreciation and amortization	7,235	7,169	14,458	14,352
General and administrative, including management fees to Vornado of $595, $540, $1,190 and $1,080, respectively	1,700	1,670	2,773	2,776
Total expenses	23,411	23,037	47,261	45,867
OPERATING INCOME	23,891	23,841	48,816	48,312
Interest and other income, net	388	36	773	70
Interest and debt expense	(11,140)	(11,311)	(22,288)	(22,784)
Income from continuing operations	13,139	12,566	27,301	25,598
Income from discontinued operations	0	6,672	0	13,064
Net income	13,139	19,238	27,301	38,662
Net income attributable to the noncontrolling interest	0	(346)	0	(288)
Net income attributable to Alexander's	$ 13,139	$ 18,892	$ 27,301	$ 38,374
Income per common share - basic and diluted:
Income from continuing operations (in dollars per share)	$ 2.57	$ 2.46	$ 5.34	$ 5.01
Income from discontinued operations, net (in dollars per share)	$ 0	$ 1.24	$ 0	$ 2.50
Net income per common share (in dollars per share)	$ 2.57	$ 3.70	$ 5.34	$ 7.51
Weighted average shares outstanding (in shares)	5,108,745	5,107,415	5,108,383	5,107,199
Dividends per common share (in dollars per share)	$ 2.75	$ 3.75	$ 5.50	$ 7.50