Consolidated Statements of Cash Flows (USD $) In Thousands, unless otherwise specified	6 Months Ended
	Jun. 30, 2012	Jun. 30, 2011
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 38,662	$ 38,007
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization (including amortization of debt issuance costs)	18,970	18,254
Straight-lining of rental income	(2,664)	(7,082)
Stock-based compensation expense	300	300
Change in operating assets and liabilities:
Accounts receivable, net	351	1,435
Other assets	(24,935)	(22,642)
Amounts due to Vornado	(860)	(469)
Accounts payable and accrued expenses	(577)	(3,709)
Income tax liability of taxable REIT subsidiary	14	34
Other liabilities	(15)	(15)
Net cash provided by operating activities	29,246	24,113
CASH FLOWS FROM INVESTING ACTIVITIES
Construction in progress and real estate additions	(5,128)	(8,039)
Proceeds from maturing short-term investments	5,000	23,000
Restricted cash	(855)	(2,583)
Net cash (used in) provided by investing activities	(983)	12,378
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends paid	(38,303)	(30,636)
Debt repayments	(7,400)	(157,090)
Debt issuance costs	(400)	(4,435)
Proceeds from borrowings	0	250,000
Distributions to noncontrolling interests	0	(600)
Net cash (used in) provided by financing activities	(46,103)	57,239
Net (decrease) increase in cash and cash equivalents	(17,840)	93,730
Cash and cash equivalents at beginning of period	506,619	397,220
Cash and cash equivalents at end of period	488,779	490,950
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash payments for interest	23,967	28,516
NON-CASH TRANSACTIONS
Non-cash additions to real estate included in accounts payable and accrued expenses	1,349	2,391
Write-off of fully amortized and depreciated assets	$ 624	$ 6,510