Mortgages Payable (Tables)

12 Months Ended

Dec. 31, 2017

Debt Disclosure [Abstract]

Schedule of Long-term Debt Instruments

The following is a summary of our outstanding mortgages payable. We may refinance our maturing debt as it comes due or choose to repay it.

			Interest Rate at December 31, 2017	Balance at December 31,
(Amounts in thousands)		Maturity(1)		2017			2016
First mortgages secured by:
	Rego Park I shopping center (100% cash	Mar. 2018	0.35%	$	78,246		$	78,246
	collateralized)
	Paramus	Oct. 2018	2.90%	68,000			68,000
	Rego Park II shopping center(2)	Nov. 2018	3.42%	256,194			259,901
	731 Lexington Avenue, retail space(3)	Aug. 2022	2.78%	350,000			350,000
	731 Lexington Avenue, office space(4)	Jun. 2024	2.38%	500,000			300,000
	Total			1,252,440			1,056,147
	Deferred debt issuance costs, net of accumulated
	amortization of $6,315 and $6,824, respectively			(12,218		)	(3,788		)
				$	1,240,222		$	1,052,359
(1)	Represents the extended maturity where we have the unilateral right to extend.
(2)	This loan bears interest at LIBOR plus 1.85%. See page  for details of our Rego Park II loan participation.
(3)	This loan bears interest at LIBOR plus 1.40%.
(4)	This loan bears interest at LIBOR plus 0.90%.

Schedule of Maturities of Long-term Debt

As of December 31, 2017, the principal repayments for the next five years and thereafter are as follows:

(Amounts in thousands)
Year Ending December 31,	Amount
2018	$	402,440
2019	—
2020	—
2021	—
2022	350,000
Thereafter	500,000