Deferred Financing and Leasing Costs Intangible Amortization Schedule (Details) (USD $) In Thousands, unless otherwise specified	Dec. 31, 2013	Dec. 31, 2012
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Line Items]
Deferred financing and leasing costs, net	$ 226,607	$ 129,329
Leases, Acquired-in-Place [Member]
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Line Items]
2014	29,808
2015	21,720
2016	16,193
2017	10,180
2018	5,782
Thereafter	7,799
Deferred financing and leasing costs, net	91,482
Above (Below) Market Leases [Member]
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Line Items]
2014	2,628
2015	2,039
2016	1,542
2017	579
2018	176
Thereafter	(864)
Deferred financing and leasing costs, net	$ 6,100