Identified Intangible Assets And Liabilities (Identified Intangible Assets and Liabilities and the Remaining Weighted-Average Amortization Period associated with our Asset Acquisitions) (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2020	Dec. 31, 2019
Finite-Lived Intangible Assets [Line Items]
Below-market leases	$ 5,205	$ 13,762
Leases, Acquired-in-Place [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 48,562	$ 30,253
Acquired finite-lived intangible assets, weighted average useful life	7 years 9 months 18 days	11 years
Above Market Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Finite-lived intangible assets acquired	$ 1,901	$ 1,323
Acquired finite-lived intangible assets, weighted average useful life	7 years 1 month 6 days	7 years 2 months 12 days
Above-Market Assumed Mortgages [Member]
Finite-Lived Intangible Assets [Line Items]
Above-market assumed mortgages (included in Debt, net)	$ 4,249
Acquired finite-lived intangible liabilities, weighted average useful life	8 years 3 months 18 days
Below Market Leases [Member]
Finite-Lived Intangible Assets [Line Items]
Acquired finite-lived intangible liabilities, weighted average useful life	7 years 9 months 18 days	13 years 6 months