Mortgages Payable (Tables)

6 Months Ended

Jun. 30, 2013

Notes and Mortgages Payable [Abstract]

Schedule of Mortgages Payable [Table Text Block]

						Balance at
				Interest Rate at		June 30,		December 31,
(Amounts in thousands)			Maturity	June 30, 2013		2013		2012
First mortgages secured by:
	731 Lexington Avenue, office space		Feb. 2014	5.33	%	$	320,886	$	327,425
	Rego Park I shopping center (100% cash
		collateralized)	Mar. 2015	0.40	%		78,246		78,246
	731 Lexington Avenue, retail space(1)		Jul. 2015	4.93	%		320,000		320,000
	Paramus		Oct. 2018	2.90	%		68,000		68,000
	Rego Park II shopping center(2)		Nov. 2018	2.05	%		270,896		272,245
						$	1,058,028	$	1,065,916
(1)	This loan is non-recourse to us, except for $75,000 in the event of a substantial casualty, as defined.
(2)	This loan bears interest at LIBOR plus 1.85%.