Acquired In-Place Leases and Above/Below Market Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2016	Dec. 31, 2015	Dec. 31, 2014
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of acquired above and below market leases	$ 3.5	$ 2.9	$ 2.8
Weighted-average amortization period of below market leases	7 years 2 months
Acquired lease, below market renewal options	$ 15.8
Weighted-average amortization period of acquired leases prior to the commencement of renewal option	9 years 9 months
In-place leases
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period of acquired leases	2 years 6 months
Above market leases
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period of acquired leases	1 year