Acquired In-Place Leases and Above/Below Market Leases (Details) (USD $) In Millions, unless otherwise specified	12 Months Ended
	Dec. 31, 2013	Dec. 31, 2012	Dec. 31, 2011
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of acquired above and below market leases	$ 2.4	$ (0.2)	$ (1.1)
Weighted-average amortization period of below market leases	8 years 8 months
Acquired lease, below market renewal options	$ 21.0
Weighted-average amortization period of acquired leases prior to the commencement of renewal option	9 years 10 months 20 days
In-place leases
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period of acquired leases	3 years 9 months
Above Market Leases
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period of acquired leases	2 years 3 months