Consolidated Statements of Cash Flows (Unaudited) - USD ($) $ in Thousands	6 Months Ended
	Jun. 30, 2019	Jun. 30, 2018
CASH FLOWS FROM OPERATING ACTIVITIES
Net income (loss)	$ 29,148	$ 7,870
Adjustments to reconcile net income to net cash provided by operating activities:
Depreciation and amortization, including amortization of debt issuance costs	18,278	19,740
Straight-lining of rental income	1,313	2,038
Stock-based compensation	394	394
Change in fair value of marketable securities	5,240	4,737
Changes in operating assets and liabilities:
Tenant and other receivables, net	(652)	(329)
Other assets	(2,054)	(8,785)
Amounts due to Vornado	2,679	(2,064)
Accounts payable and accrued expenses	(3,246)	(382)
Other liabilities	(302)	10,246
Net cash provided by operating activities	50,798	33,465
CASH FLOWS FROM INVESTING ACTIVITIES
Construction in progress and real estate additions	(4,901)	(1,789)
Repayment of Rego Park II loan participation	0	1,519
Net cash used in investing activities	(4,901)	(270)
CASH FLOWS FROM FINANCING ACTIVITIES
Dividends paid	(46,056)	(46,044)
Debt issuance costs	(14)	(141)
Debt repayments	0	(158,452)
Proceeds from borrowing	0	78,246
Net cash used in financing activities	(46,070)	(126,391)
Net decrease in cash and cash equivalents and restricted cash	(173)	(93,196)
Cash and cash equivalents and restricted cash at beginning of period	289,495	393,279
Cash and cash equivalents and restricted cash at end of period	289,322	300,083
RECONCILIATION OF CASH AND CASH EQUIVALENTS AND RESTRICTED CASH
Cash and cash equivalents at beginning of period	283,056	307,536
Restricted cash at beginning of period	6,439	85,743
Cash and cash equivalents and restricted cash at beginning of period	289,495	393,279
Cash and cash equivalents at end of period	283,948	293,840
Restricted cash at end of period	5,374	6,243
Cash and cash equivalents and restricted cash at end of period	289,322	300,083
SUPPLEMENTAL DISCLOSURE OF CASH FLOW INFORMATION
Cash payments for interest	18,107	17,782
NON-CASH TRANSACTIONS
Lease liability arising from the recognition of right-of-use asset	5,428	0
Reclassification of prepaid real estate taxes to construction in progress for property in redevelopment	1,466	0
Liability for real estate additions, including $29 for development fees due to Vornado in each period	791	209
Write-off of fully amortized and/or depreciated assets	$ 0	$ 13,742