Deferred Leasing Costs and Other Intangibles - Schedule of Amortization of Deferred Leasing Costs, Intangible Assets and Intangible Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Dec. 31, 2019
Below-market lease values
Remainder of 2020	$ (432)
2021	(1,599)
2022	(1,531)
2023	(1,415)
2024	(1,382)
2025 and thereafter	(2,084)
Total	(8,443)	$ (22,149)
Deferred leasing costs
Remainder of 2020	1,272
2021	4,619
2022	3,846
2023	2,963
2024	2,345
2025 and thereafter	7,562
Net Carrying Amount	22,607	28,708
Net increase (decrease) to property operating income
Intangible assets (liabilities) and deferred leasing costs, amortization expense (income):
Remainder of 2020	5
2021	(66)
2022	(283)
2023	(775)
2024	(911)
2025 and thereafter	(1,763)
Total	(3,793)
Amortization expense
Intangible assets (liabilities) and deferred leasing costs, amortization expense (income):
Remainder of 2020	3,297
2021	12,993
2022	11,167
2023	8,725
2024	7,278
2025 and thereafter	37,771
Total	81,231
Above-market lease values
Above-market and In-place lease values
Remainder of 2020	437
2021	1,533
2022	1,248
2023	640
2024	471
2025 and thereafter	321
Net Carrying Amount	4,650	8,008
In-place lease values
Above-market and In-place lease values
Remainder of 2020	2,025
2021	8,374
2022	7,321
2023	5,762
2024	4,933
2025 and thereafter	30,209
Net Carrying Amount	$ 58,624	$ 76,046

Below Market Lease, Amortization Income, After Year Four

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Deferred Leasing Costs, Amortization Expense, Year Four

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Finite-Lived Intangible Asset, Expected Amortization, After Year Four

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Intangible Assets (Liabilities) And Deferred Leasing Costs, Amortization Expense (Income), After Year Four

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Intangible Assets (Liabilities) And Deferred Leasing Costs, Amortization Expense (Income), Remainder Of Fiscal Year

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Intangible Assets (Liabilities) And Deferred Leasing Costs, Amortization Expense (Income), Year Four

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Intangible Assets (Liabilities) And Deferred Leasing Costs, Amortization Expense (Income), Year One

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Intangible Assets (Liabilities) And Deferred Leasing Costs, Amortization Expense (Income), Year Three

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Intangible Assets (Liabilities) And Deferred Leasing Costs, Amortization Expense (Income), Year Two

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Intangible Assets (Liabilities) And Deferred Leasing Costs, Maturity Schedule [Abstract]

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Intangible Assets (Liabilities) And Deferred Leasing Costs, Net

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Amount of amortization income for lease with finite life acquired as part of real property acquisition at below market lease rate expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization income for lease with finite life acquired as part of real property acquisition at below market lease rate expected to be recognized in remainder of current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization income for lease with finite life acquired as part of real property acquisition at below market lease rate expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization income for lease with finite life acquired as part of real property acquisition at below market lease rate expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization income for lease with finite life acquired as part of real property acquisition at below market lease rate expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount after amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life.

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This element represents costs incurred by the lessor that are (a) costs to originate a lease incurred in transactions with independent third parties that (i) result directly from and are essential to acquire that lease and (ii) would not have been incurred had that leasing transaction not occurred and (b) certain costs directly related to specified activities performed by the lessor for that lease. Those activities are: evaluating the prospective lessee's financial condition; evaluating and recording guarantees, collateral, and other security arrangements; negotiating lease terms; preparing and processing lease documents; and closing the transaction. This element is net of accumulated amortization.

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in next fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in remainder of current fiscal year.

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in fourth fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in third fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount of amortization for assets, excluding financial assets and goodwill, lacking physical substance with finite life expected to be recognized in second fiscal year following current fiscal year. Excludes interim and annual periods when interim periods are reported from current statement of financial position date (rolling approach).

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Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life.

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