Intangible Assets and Liabilities - Intangibles - Future Amortization (Details) - USD ($) $ in Thousands	Jun. 30, 2021	Dec. 31, 2020
Future Amortization of Intangible Liabilities:
Finite-lived intangible liabilities, net	$ (55,313)	$ (69,846)
Below-Market Rents
Future Amortization of Intangible Liabilities:
2021 (six months)	(8,616)
2022	(10,170)
2023	(8,375)
2024	(7,358)
2025	(6,711)
Thereafter	(12,479)
Finite-lived intangible liabilities, net	(53,709)	(68,219)
Above-Market Ground Lease
Future Amortization of Intangible Liabilities:
2021 (six months)	(23)
2022	(46)
2023	(46)
2024	(46)
2025	(46)
Thereafter	(1,397)
Finite-lived intangible liabilities, net	(1,604)	(1,627)
In-Place Leases
Future Amortization of Intangible Assets:
2021 (six months)	19,519
2022	25,432
2023	20,591
2024	16,079
2025	12,258
Thereafter	23,471
Finite-lived intangible assets, net	117,350	145,290
Above-Market Rents
Future Amortization of Intangible Assets:
2021 (six months)	2,651
2022	4,393
2023	3,564
2024	2,787
2025	1,791
Thereafter	4,606
Finite-lived intangible assets, net	19,792	24,960
Below-Market Ground Lease
Future Amortization of Intangible Assets:
2021 (six months)	138
2022	276
2023	276
2024	276
2025	276
Thereafter	15,860
Finite-lived intangible assets, net	$ 17,102	$ 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, 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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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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