Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	9 Months Ended
	Sep. 30, 2013	Sep. 30, 2012
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 41,125	$ 58,010
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization, including amortization of debt issuance costs	23,535	28,488
Straight-lining of rental income	(3,022)	(3,824)
Stock-based compensation expense	394	300
Reduction of income tax liability	(206)	0
Change in operating assets and liabilities:
Tenant and other receivables, net	(348)	(1,083)
Other assets	(10,036)	(15,703)
Amounts due to Vornado	(2,413)	(1,546)
Accounts payable and accrued expenses	5,274	8,034
Other liabilities	(40)	0
Net cash provided by operating activities	54,263	72,676
CASH FLOWS FROM INVESTING ACTIVITIES
Construction in progress and real estate additions	(5,931)	(6,502)
Restricted cash	(75)	(416)
Proceeds from maturing short-term investments	0	5,000
Net cash used in investing activities	(6,006)	(1,918)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends paid	(42,145)	(57,458)
Debt repayments	(11,870)	(11,156)
Debt issuance costs	(85)	(400)
Net cash used in financing activities	(54,100)	(69,014)
Net (decrease) increase in cash and cash equivalents	(5,843)	1,744
Cash and cash equivalents at beginning of period	353,396	506,619
Cash and cash equivalents at end of period	347,553	508,363
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash payments for interest	31,695	36,058
NON-CASH TRANSACTIONS
Non-cash additions to real estate included in accounts payable and accrued expenses	1,458	1,038
Write-off of fully amortized and depreciated assets	$ 0	$ 648