Goodwill, Deferred Leasing Costs and Other Intangibles - Future Amortization Expense (Details) $ in Thousands	Sep. 30, 2020 USD ($)
Net increase (decrease) to rental income
Remaining 2020	$ 123
2021	3,350
2022	4,671
2023	5,857
2024	(6,380)
2025 and Thereafter	(10,799)
Total	(3,178)
Amortization expense
Remaining 2020	56,992
2021	201,216
2022	156,612
2023	128,763
2024	94,469
2025 and Thereafter	487,474
Total	$ 1,125,526

Amortization of Above and Below Market Leases [Abstract]

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Amortization of Above and Below Market Leases, After Year Four

+ References

No definition available.

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Amortization of Above and Below Market Leases, Remainder of Fiscal Year

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No definition available.

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Amortization of Above and Below Market Leases, Total

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Amortization of Above and Below Market Leases, Year Four

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Amortization of Above and Below Market Leases, Year One [Member]

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Amortization of Above and Below Market Leases, Year Three

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Amortization of Above and Below Market Leases, Year Two

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

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Finite-Lived Intangible Assets, 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).

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 30
-Section 50
-Paragraph 2
-Subparagraph (a)(3)
-URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275

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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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