Acquired Intangible Assets and Liabilities (Schedule of Estimated Annual Amortization of Below Market Leases) (Details) - Below-Market Leases, Net of Above-Market Leases $ in Thousands	Jun. 30, 2020 USD ($)
Finite-Lived Intangible Assets [Line Items]
Remainder of 2020	$ (4,165)
2021	(3,403)
2022	4,809
2023	9,575
2024	10,227
Thereafter	65,273
Total	$ 82,316