Consolidated Statements of Income (USD $) In Thousands, except Share data, unless otherwise specified	3 Months Ended		9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012	Sep. 30, 2013	Sep. 30, 2012
REVENUES
Property rentals	$ 33,918	$ 33,779	$ 101,759	$ 101,034
Expense reimbursements	15,968	14,863	44,204	41,787
Total revenues	49,886	48,642	145,963	142,821
EXPENSES
Operating, including fees to Vornado of $1,084, $1,146, $3,068 and $3,231, respectively	16,929	16,445	46,959	45,184
Depreciation and amortization	7,272	7,225	21,730	21,577
General and administrative, including management fees to Vornado of $595, $540, $1,785 and $1,620, respectively	1,268	1,177	4,034	3,895
Total expenses	25,469	24,847	72,723	70,656
OPERATING INCOME	24,417	23,795	73,240	72,165
Interest and other income, net	374	41	1,147	111
Interest and debt expense	(11,140)	(11,422)	(33,428)	(34,206)
Income before income taxes	13,651	12,414	40,959	38,070
Income tax benefit (expense)	173	(4)	166	(62)
Income from continuing operations	13,824	12,410	41,125	38,008
Income from discontinued operations	0	6,938	0	20,002
Net income	13,824	19,348	41,125	58,010
Net income attributable to the noncontrolling interest	0	(492)	0	(780)
Net income attributable to Alexander's	$ 13,824	$ 18,856	$ 41,125	$ 57,230
Income per common share - basic and diluted:
Income from continuing operations (in dollars per share)	$ 2.71	$ 2.43	$ 8.05	$ 7.44
Income from discontinued operations, net (in dollars per share)	$ 0	$ 1.26	$ 0	$ 3.76
Net income per common share (in dollars per share)	$ 2.71	$ 3.69	$ 8.05	$ 11.20
Weighted average shares outstanding (in shares)	5,109,717	5,108,016	5,108,832	5,107,474
Dividends per common share (in dollars per share)	$ 2.75	$ 3.75	$ 8.25	$ 11.25