Intangible Assets and Liabilities - Intangibles - Future Amortization (Details) - USD ($) $ in Thousands	Mar. 31, 2021	Dec. 31, 2020
Future Amortization of Intangible Liabilities:
Finite-lived intangible liabilities, net	$ (65,922)	$ (69,846)
Below-Market Rents
Future Amortization of Intangible Liabilities:
2021 (nine months)	(10,623)
2022	(11,755)
2023	(10,040)
2024	(8,929)
2025	(8,197)
Thereafter	(14,763)
Finite-lived intangible liabilities, net	(64,307)	(68,219)
Above-Market Ground Lease
Future Amortization of Intangible Liabilities:
2021 (nine months)	(35)
2022	(46)
2023	(46)
2024	(46)
2025	(46)
Thereafter	(1,396)
Finite-lived intangible liabilities, net	(1,615)	(1,627)
In-Place Leases
Future Amortization of Intangible Assets:
2021 (nine months)	27,964
2022	27,431
2023	22,527
2024	17,683
2025	13,702
Thereafter	25,617
Finite-lived intangible assets, net	134,924	145,290
Above-Market Rents
Future Amortization of Intangible Assets:
2021 (nine months)	4,340
2022	4,806
2023	3,915
2024	3,061
2025	2,014
Thereafter	5,241
Finite-lived intangible assets, net	23,377	24,960
Below-Market Ground Lease
Future Amortization of Intangible Assets:
2021 (nine months)	207
2022	276
2023	276
2024	276
2025	276
Thereafter	15,860
Finite-lived intangible assets, net	$ 17,171	$ 17,240

Finite Lived Intangible Assets Amortization Expense After Year Four

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Finite Lived Intangible Liabilities Amortization Expense after Year Four

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Finite Lived Intangible Liabilities Amortization Expense Remainder Of Fiscal Year

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Finite Lived Intangible Liabilities, Amortization Expense, Year One

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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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Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
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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 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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