Lease Intangibles - Additional Information (Details) - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Below market rents, acquired	$ 4.6	$ 10.4
Below market rents acquired, weighted average useful life	20 years 2 months 12 days	21 years 8 months 12 days
In-place lease intangible assets
Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 21.0	$ 36.1
Acquired intangible assets, weighted average useful life	4 years 10 months 24 days	7 years 10 months 24 days
Above-market rent
Finite-Lived Intangible Assets [Line Items]
Intangible assets acquired	$ 2.0	$ 0.6
Acquired intangible assets, weighted average useful life	5 years 9 months 18 days	6 years 8 months 12 days