Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2017	Dec. 31, 2016
Real estate, at cost:
Land	$ 44,971	$ 44,971
Buildings and leasehold improvements	988,846	985,800
Development and construction in progress	3,551	2,780
Total	1,037,368	1,033,551
Accumulated depreciation and amortization	(283,044)	(252,737)
Real estate, net	754,324	780,814
Cash and cash equivalents	307,536	288,926
Restricted cash	85,743	85,752
Rego Park II loan participation	198,537	0
Marketable securities	35,156	37,918
Tenant and other receivables, net of allowance for doubtful accounts of $1,501 and $1,473, respectively	2,693	3,056
Receivable arising from the straight-lining of rents	174,713	179,010
Deferred lease and other property costs, net, including unamortized leasing fees to Vornado of $35,152 and $36,960, respectively	45,790	48,387
Other assets	27,903	27,367
Assets	1,632,395	1,451,230
LIABILITIES AND EQUITY
Mortgages payable, net of deferred debt issuance costs	1,240,222	1,052,359
Amounts due to Vornado	2,490	897
Accounts payable and accrued expenses	42,827	42,200
Other liabilities	2,901	2,929
Total liabilities	1,288,440	1,098,385
Commitments and contingencies
Preferred stock: $1.00 par value per share; authorized, 3,000,000 shares; issued and outstanding, none	0	0
Common stock: $1.00 par value per share; authorized, 10,000,000 shares; issued, 5,173,450 shares; outstanding, 5,107,290 and 5,106,196, respectively	5,173	5,173
Additional capital	31,577	31,189
Retained earnings	302,543	308,995
Accumulated other comprehensive income	5,030	7,862
Equity before treasury stock	344,323	353,219
Treasury stock: 66,160 and 67,254 shares, respectively, at cost	(368)	(374)
Total equity	343,955	352,845
Total liabilities and equity	$ 1,632,395	$ 1,451,230