Lease Intangibles - Scheduled Amortization of Acquired Lease Intangible Assets and Assumed Liabilities (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Acquired Lease Intangibles [Abstract]
Net Increase In Lease Revenues, Total	$ 66,549	$ 75,972
Amortizable Intangible Assets, Net Carrying Amount	(83,722)	(100,732)
In-place lease intangible assets
Acquired Lease Intangibles [Abstract]
2021, Net Increase In Lease Revenues	3,205
2022, Net Increase In Lease Revenues	5,929
2023, Net Increase In Lease Revenues	5,460
2024, Net Increase In Lease Revenues	5,106
2025, Net Increase In Lease Revenues	4,435
Thereafter, Net Increase In Lease Revenues	38,886
Net Increase In Lease Revenues, Total	63,021
2021, Increase to Amortization	(11,153)
2022, Increase to Amortization	(17,741)
2023, Increase to Amortization	(13,134)
2024, Increase to Amortization	(9,262)
2025, Increase to Amortization	(6,914)
Thereafter, Increase to Amortization	(21,990)
Amortizable Intangible Assets, Net Carrying Amount	(80,194)	$ (96,479)
2021, Reduction of Rent Expense	29
2022, Reduction of Rent Expense	58
2023, Reduction of Rent Expense	58
2024, Reduction of Rent Expense	58
2025, Reduction of Rent Expense	58
Thereafter, Reduction of Rent Expense	172
Reduction of Rent Expense, Total	433
2021, Net Income (Expense)	(7,919)
2022, Net Income (Expense)	11,754
2023, Net Income (Expense)	7,616
2024, Net Income (Expense)	4,098
2025, Net Income (Expense)	2,421
Thereafter, Net Income (Expense)	17,068
Total, Net Income (Expense)	$ 16,740