Related party transaction (Tables)

12 Months Ended

Dec. 31, 2011

Related party transactions [Abstract]

Summary of Fees to Vornado [Table Text Block]

(Amounts in thousands)		Year Ended December 31,
		2011		2010		2009
Company management fees		$	3,000	$	3,000	$	3,000
Development fees			750		727		3,215
Leasing fees			4,472		4,267		15,975
Property management fees and payments for cleaning, engineering
	and security services		4,648		4,342		4,108
		$	12,870	$	12,336	$	26,298