XML 85 R72.htm IDEA: XBRL DOCUMENT
v3.6.0.2

Related Party Transactions - Registration Rights (Details) - Registration rights agreement [Member] | 12 Months Ended
--- | ---
Dec. 31, 2016 USD ($) $ / underwritten_offering underwritten_offering
Related Party Transaction [Line Items] |
Number of underwritten offerings, maximum, during 12-month period following shelf effective date | underwritten_offering | 2
Primary shares cutback value, minimum | $ | $ 25,000,000
Payments for fees and registration per underwritten offering, maximum (in dollars per offering) | $ / underwritten_offering | 25,000
Certain persons receiving common stock or operating partnership units in formation transactions [Member] |
Related Party Transaction [Line Items] |
Registrable shares market value, minimum | $ | $ 150,000,000.0
Number of underwritten offerings, maximum | underwritten_offering | 4

X
- Definition Related Party Transaction, Number of Underwritten Offerings, During Twelve Months Following Shelf Effective Date, Maximum + References No definition available. + Details
Name: | esrt_RelatedPartyTransactionNumberofUnderwrittenOfferingsDuringTwelveMonthsFollowingShelfEffectiveDateMaximum
Namespace Prefix: | esrt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Related Party Transaction, Number of Underwritten Offerings, Maximum + References No definition available. + Details
Name: | esrt_RelatedPartyTransactionNumberofUnderwrittenOfferingsMaximum
Namespace Prefix: | esrt_
Data Type: | xbrli:integerItemType
Balance Type: | na
Period Type: | instant

X
- Definition Related Party Transaction, Primary Shares Cutback Amount, Minimum + References No definition available. + Details
Name: | esrt_RelatedPartyTransactionPrimarySharesCutbackAmountMinimum
Namespace Prefix: | esrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Related Party Transaction, Underwriting Offering, Registrable Shares Market Value, Minimum + References No definition available. + Details
Name: | esrt_RelatedPartyTransactionUnderwritingOfferingRegistrableSharesMarketValueMinimum
Namespace Prefix: | esrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | instant

X
- Definition Related Party Transactions, Payments for Fees And Registration Per Underwritten Offering, Maximum + References No definition available. + Details
Name: | esrt_RelatedPartyTransactionsPaymentsforFeesAndRegistrationPerUnderwrittenOfferingMaximum
Namespace Prefix: | esrt_
Data Type: | xbrli:decimalItemType
Balance Type: | na
Period Type: | duration

X
- Definition Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table. + References No definition available. + Details
Name: | us-gaap_RelatedPartyTransactionLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | us-gaap_RelatedPartyTransactionAxis=esrt_RegistrationRightsAgreementMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_RelatedPartyTransactionsByRelatedPartyAxis=esrt_CertainPersonsReceivingEquityinFormationTransactionsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |