Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2015	Sep. 30, 2014
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 53,335	$ 49,764
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization, including amortization of debt issuance costs	24,725	23,838
Straight-lining of rental income	(1,276)	(1,905)
Stock-based compensation expense	600	394
Reversal of income tax liability	0	(420)
Change in operating assets and liabilities:
Tenant and other receivables, net	(559)	538
Other assets	(13,969)	(14,345)
Amounts due to Vornado	(102)	872
Accounts payable and accrued expenses	9,527	7,686
Other liabilities	(23)	(13)
Net cash provided by operating activities	72,258	66,409
CASH FLOWS FROM INVESTING ACTIVITIES
Construction in progress and real estate additions	(41,919)	(39,957)
Change in restricted cash	(168)	5,294
Proceeds from maturing short-term investments	24,998	0
Net cash used in investing activities	(17,089)	(34,663)
CASH FLOWS FROM FINANCING ACTIVITIES
Debt repayments	(322,372)	(316,418)
Proceeds from borrowing	350,000	300,000
Dividends paid	(53,675)	(49,825)
Debt issuance costs	(4,071)	(4,245)
Net cash used in financing activities	(30,118)	(70,488)
Net increase (decrease) in cash and cash equivalents	25,051	(38,742)
Cash and cash equivalents at beginning of period	227,815	347,718
Cash and cash equivalents at end of period	252,866	308,976
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash payments for interest, excluding capitalized interest of $1,420 and $265 respectively	18,065	24,062
NON-CASH TRANSACTIONS
Liability for real estate additions (including $5,540 due to Vornado in 2015)	13,259	14,296
Write-off of fully amortized and/or depreciated assets	$ 9,600	$ 10,569