Other Liabilities and Deferred Credits (Details) - USD ($) $ in Thousands	Dec. 31, 2014	Dec. 31, 2013
Other Liabilities Disclosure [Abstract]
Acquired below market leases, net	$ 42,852	$ 47,910
Prepaid rent and deferred revenue	7,288	7,506
Derivative Liability	1,448	0
Straight-line rent liability	2,533	1,145
Deferred rent expense	584	829
Deferred compensation	981	769
Deferred tax Liability	219	233
Other liabilities	88	73
Total other liabilities and deferred credits	$ 55,993	$ 58,465