Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands		Jun. 30, 2015	Dec. 31, 2014
Payables and Accruals [Abstract]
Accounts payable and accrued expenses		$ 69,373	$ 68,488
Payable to the estate of Leona M. Helmsley	[1]	18,367	18,367
Accrued interest payable		6,098	5,953
Due to affiliated companies		7,836	3,755
Accounts payable and accrued expenses		$ 101,674	$ 96,563

[1] Reflects a payable to the estate of Leona M. Helmsley in the amount of New York City transfer taxes which would have been payable in absence of the estate's exemption from such tax.