Consolidated Statements of Cash Flows - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2017	Jun. 30, 2016
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 42,327	$ 43,786
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization, including amortization of debt issuance costs	17,334	18,981
Straight-lining of rental income	2,149	910
Stock-based compensation expense	394	450
Changes in operating assets and liabilities:
Tenant and other receivables, net	280	1,495
Other assets	(26,191)	(34,112)
Amounts due to Vornado	(319)	(1,607)
Accounts payable and accrued expenses	(155)	2,851
Other liabilities	(14)	(15)
Net cash provided by operating activities	35,805	32,739
CASH FLOWS FROM INVESTING ACTIVITIES
Construction in progress and real estate additions	(2,205)	(11,146)
Net cash used in investing activities	(2,205)	(11,146)
CASH FLOWS FROM FINANCING ACTIVITIES
Debt repayments	(301,819)	(1,687)
Proceeds from borrowing	500,000	0
Dividends paid	(43,474)	(40,905)
Debt issuance costs	(11,962)	(16)
Net cash provided by (used in) financing activities	142,745	(42,608)
Net increase (decrease) in cash and cash equivalents and restricted cash	176,345	(21,015)
Cash and cash equivalents and restricted cash at beginning of period	374,678	344,656
Cash and cash equivalents and restricted cash at end of period	551,023	323,641
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH
Cash and cash equivalents at beginning of period	288,926	259,349
Restricted cash at beginning of period	85,752	85,307
Cash and cash equivalents and restricted cash at beginning of period	374,678	344,656
Cash and cash equivalents at end of period	466,456	235,753
Restricted cash at end of period	84,567	87,888
Cash and cash equivalents and restricted cash at end of period	551,023	323,641
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash payments for interest	11,758	9,496
NON-CASH TRANSACTIONS
Liability for real estate additions, including $27 and $74 for development fees due to Vornado in 2017 and 2016, respectively	115	1,401
Write-off of fully amortized and/or depreciated assets	4,265	1,591
Change in unrealized net gain on available-for-sale securities	$ (6,841)	$ 2,515