Other Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2014	Dec. 31, 2013
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Leasing commissions, net of accumulated amortization of $20,659 and $19,606 respectively	$ 19,484	$ 18,071
Acquired above market leases, net	5,103	7,399
Acquired in-place leases, net	18,631	24,534
Lease incentives, net of accumulated amortization of $2,960 and $2,590, respectively	740	1,110
Other intangible assets, net of accumulated amortization of $1,590 and $1,554, respectively	453	655
Debt issuance costs, net of accumulated amortization of $4,147 and $2,985, respectively	5,361	2,632
Prepaid expenses, deposits and other	3,629	3,269
Total other assets	$ 53,401	$ 57,670