Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2018	Jun. 30, 2017
CASH FLOWS FROM OPERATING ACTIVITIES
Net income	$ 7,870	$ 42,327
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization, including amortization of debt issuance costs	19,740	17,334
Straight-lining of rental income	2,038	2,149
Stock-based compensation	394	394
Change in fair value of marketable securities (see Note 7)	4,737	0
Changes in operating assets and liabilities:
Tenant and other receivables, net	(329)	280
Other assets	(8,785)	(26,191)
Amounts due to Vornado	(2,064)	(319)
Accounts payable and accrued expenses	(382)	(155)
Other liabilities	10,246	(14)
Net cash provided by operating activities	33,465	35,805
CASH FLOWS FROM INVESTING ACTIVITIES
Construction in progress and real estate additions	(1,789)	(2,205)
Principal repayment proceeds from Rego Park II loan participation	1,519	0
Net cash used in investing activities	(270)	(2,205)
CASH FLOWS FROM FINANCING ACTIVITIES
Debt repayments	(158,452)	(301,819)
Proceeds from borrowing	78,246	500,000
Dividends paid	(46,044)	(43,474)
Debt issuance costs	(141)	(11,962)
Net cash (used in) provided by financing activities	(126,391)	142,745
Net (decrease) increase in cash and cash equivalents and restricted cash	(93,196)	176,345
Cash and cash equivalents and restricted cash at beginning of period	393,279	374,678
Cash and cash equivalents and restricted cash at end of period	300,083	551,023
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH
Cash and cash equivalents at beginning of period	307,536	288,926
Restricted cash at beginning of period	85,743	85,752
Cash and cash equivalents and restricted cash at beginning of period	393,279	374,678
Cash and cash equivalents at end of period	293,840	466,456
Restricted cash at end of period	6,243	84,567
Cash and cash equivalents and restricted cash at end of period	300,083	551,023
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash payments for interest	17,782	11,758
NON-CASH TRANSACTIONS
Liability for real estate additions, including $29 and $27 for development fees due to Vornado in 2018 and 2017, respectively	209	115
Write-off of fully amortized and/or depreciated assets	$ 13,742	$ 4,265