Intangible Assets (Details) (USD $) In Thousands, unless otherwise specified	Jun. 30, 2014	Dec. 31, 2013	Jun. 30, 2013	Dec. 31, 2012
Intangible Assets
In-place leases, net of accumulated amortization of $7,640 and $5,729 in 2013 and 2012, respectively	$ 131,219	$ 152,830
Above market leases, net of accumulated amortization of $9,727 and $9,424 in 2013 and 2012, respectively	10,742	12,332
Finite Lived Intangible Asset Below Market Ground Leases Net	1,659	1,680
Goodwill	4,101	4,131	4,147	4,751
Intangible Assets, Net (Including Goodwill)	147,721	170,973
Accumulated amortization of in place leases	47,850	26,239
Accumulated amortization of finite-lived intangible assets, above market leases	12,700	11,284
Accumulated Amortization of Finite Lived Intangible Assets Below Market Ground Leases	$ 41	$ 21