Consolidated Balance Sheets (Parentheticals) (USD $) In Thousands, except Share data, unless otherwise specified	Mar. 31, 2013	Dec. 31, 2012
Assets
Allowance for doubtful accounts	$ 2,294	$ 2,219
Unamortized leasing fees to Vornado	39,218	39,910
Deferred debt issuance costs, accumulated amortization	$ 17,410	$ 16,834
Liabilities and Equity
Preferred stock: par value per share	$ 1.00	$ 1.00
Preferred stock: authorized shares	3,000,000	3,000,000
Preferred stock: issued shares	0	0
Preferred stock: outstanding shares	0	0
Common stock: par value per share	$ 1.00	$ 1.00
Common stock: authorized shares	10,000,000	10,000,000
Common stock: issued shares	5,173,450	5,173,450
Common stock: outstanding shares	5,105,936	5,105,936
Treasury stock: shares	67,514	67,514