Investment in Unconsolidated Joint Venture - Condensed Balance Sheet (Details) (USD $) In Thousands, unless otherwise specified	Mar. 31, 2014	Dec. 31, 2013	Oct. 30, 2013
Schedule of Equity Method Investments [Line Items]
Real estate assets, at cost	$ 1,543,284	$ 1,542,805
Less accumulated depreciation and amortization	(61,958)	(41,183)
Total real estate investments, net	1,481,326	1,501,622
Total assets	2,020,063	2,048,305
Total liabilities	590,920	599,046
Deficit	(120,329)	(86,008)
Total liabilities and equity	2,020,063	2,048,305
Worldwide Plaza
Schedule of Equity Method Investments [Line Items]
Real estate assets, at cost	696,426	696,342
Less accumulated depreciation and amortization	(82,635)	(77,919)
Total real estate investments, net	613,791	618,423
Other assets	247,705	248,048
Total assets	861,496	866,471
Debt	875,000	875,000	875,000
Other liabilities	10,294	9,923
Total liabilities	885,294	884,923
Deficit	(23,798)	(18,452)
Total liabilities and equity	861,496	866,471
Company's basis	$ 229,127	$ 234,774