Acquired In-Place Leases and Above/Below Market Leases Amortization for Acquired In-Place Leases During Next Five Years and Thereafter Assuming No Early Lease Terminations (Details) - USD ($) $ in Thousands	Dec. 31, 2014	Dec. 31, 2013
Below Market Lease, Net, Amortization Income, Fiscal Year Maturity [Abstract]
2015	$ 4,667
2016	4,525
2017	4,169
2018	3,649
2019	3,560
Thereafter	22,282
Acquired lease intangible liabilities, net	42,852	$ 47,910
In-place leases
Acquired Finite-Lived Intangible Assets [Line Items]
2015	4,744
2016	3,954
2017	3,189
2018	1,893
2019	1,452
Thereafter	3,399
Acquired lease intangible assets, net	18,631
Above Market Leases
Acquired Finite-Lived Intangible Assets [Line Items]
2015	1,752
2016	1,263
2017	932
2018	628
2019	318
Thereafter	210
Acquired lease intangible assets, net	$ 5,103