Acquired In-Place Leases and Above/Below Market Leases (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019	Dec. 31, 2018
Acquired Finite-Lived Intangible Assets [Line Items]
Amortization of acquired above and below market leases	$ 3.9	$ 3.8	$ 3.6
Weighted-average amortization period of below market leases	11 years 3 months 18 days
Acquired lease, below market renewal options	$ 10.5
Weighted-average amortization period of acquired leases prior to the commencement of renewal option	9 years 4 months 24 days
In-place leases
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period of acquired leases	7 years 10 months 24 days
Above market leases
Acquired Finite-Lived Intangible Assets [Line Items]
Weighted-average amortization period of acquired leases	4 years 4 months 24 days