Acquired Lease Intangibles Schedule of Future Amortization Expense and Minimum Rent (Details) $ in Thousands	12 Months Ended
	Dec. 31, 2019 USD ($)
Amortization Expense [Abstract]
2020	$ 42,998
2021	32,551
2022	24,928
2023	19,682
2024	15,395
Future Accretion, Year Two	24,120
Future Accretion, Year Three	22,228
Future Accretion, Year Four	21,379
Future Accretion, Year Five	19,346
Net Accretion [Abstract]
2020	$ 37,593