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Deferred Costs, Acquired Lease Intangibles and Goodwill - Amortizing Acquired Intangible Assets and Liabilities (Details) - USD ($) $ in Thousands | Mar. 31, 2022 | Dec. 31, 2021
--- | --- | ---
Acquired below-market ground leases, net |  |
Acquired below-market ground leases | $ 396,916 | $ 396,916
Less: accumulated amortization | (61,970) | (60,012)
Acquired below-market ground leases, net | 334,946 | 336,904
Acquired below-market leases, net |  |
Acquired below-market leases | (65,329) | (65,403)
Less: accumulated amortization | 42,870 | 40,462
Acquired below-market leases, net | $ (22,459) | $ (24,941)

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- Definition Below Market Ground Lease, Accumulated Amortization + References No definition available. + Details
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Namespace Prefix: | esrt_
Data Type: | xbrli:monetaryItemType
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- Definition Below Market Ground Lease, Gross + References No definition available. + Details
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Namespace Prefix: | esrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | instant

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- Definition Below Market Ground Lease, Net + References No definition available. + Details
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Namespace Prefix: | esrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
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- Definition Below Market Ground Lease, Net + References No definition available. + Details
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Namespace Prefix: | esrt_
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- Definition Amount of accumulated amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life. + References No definition available. + Details
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- Definition Amount before amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
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X
- Definition Amount after amortization of leases acquired as part of a real property acquisition at below market lease rate with a finite life. + References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

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- References No definition available. + Details
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Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration