XML 79 R65.htm IDEA: XBRL DOCUMENT
v3.8.0.1

Related Party Transactions - QIA (Details) - USD ($) |  | 12 Months Ended
--- | --- | ---
Aug. 23, 2016 | Dec. 31, 2017 | Dec. 31, 2016 | Dec. 31, 2015
Noncontrolling Interest [Line Items] |  |  |  |
Gross proceeds from sale of shares | $ 621,800,000 | $ 0 | $ 611,206,000 | $ 0
Q REIT Holding LLC [Member] |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |
Interest held by subsidiary of QIA | 9.90% |  |  |
Minimum interest required to be held by affiliate of QIA in order to purchase new equity securities | 5.00% |  |  |
Threshold of equity securities issuance where top up rights are exercisable | $ 1,000,000.0 |  |  |
Threshold to indemnify | 10.00% |  |  |
Common Class A [Member] | ESRT [Member] |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |
Par value (in dollars per share) |  | $ 0.01 |  |
Common shares [Member] | Common Class A [Member] |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |
Issuance of common shares (in shares) | 29,610,854 |  | 29,610,854 |
Common shares issued (USD per share) | $ 21.00 |  |  |
General Partner [Member] | Series PR Common Units [Member] |  |  |  |
Noncontrolling Interest [Line Items] |  |  |  |
Issuance of common shares (in shares) | 29,610,854 |  | 29,611,000 |

X
- Definition Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners, Minimum Interest Required + References No definition available. + Details
Name: | esrt_NoncontrollingInterestOwnershipPercentagebyNoncontrollingOwnersMinimumInterestRequired
Namespace Prefix: | esrt_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Noncontrolling Interest, Ownership Percentage by Noncontrolling Owners, Threshold to be Indemnified + References No definition available. + Details
Name: | esrt_NoncontrollingInterestOwnershipPercentagebyNoncontrollingOwnersThresholdtobeIndemnified
Namespace Prefix: | esrt_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition Stock Issued During Period, Value, New Issues, Threshold for Top Up Rights + References No definition available. + Details
Name: | esrt_StockIssuedDuringPeriodValueNewIssuesThresholdforTopUpRights
Namespace Prefix: | esrt_
Data Type: | xbrli:monetaryItemType
Balance Type: | credit
Period Type: | duration

X
- Definition Face amount or stated value per share of common stock. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
Name: | us-gaap_CommonStockParOrStatedValuePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

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_MinorityInterestLineItems
Namespace Prefix: | us-gaap_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration

X
- Definition The equity interest of noncontrolling shareholders, partners or other equity holders in consolidated entity. + References No definition available. + Details
Name: | us-gaap_MinorityInterestOwnershipPercentageByNoncontrollingOwners
Namespace Prefix: | us-gaap_
Data Type: | num:percentItemType
Balance Type: | na
Period Type: | instant

X
- Definition The cash inflow from the additional capital contribution to the entity. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 230 -SubTopic 10 -Section 45 -Paragraph 14 -Subparagraph (a) -URI http://asc.fasb.org/extlink&oid=98514028&loc=d3e3255-108585 + Details
Name: | us-gaap_ProceedsFromIssuanceOfCommonStock
Namespace Prefix: | us-gaap_
Data Type: | xbrli:monetaryItemType
Balance Type: | debit
Period Type: | duration

X
- Definition Per share or per unit amount of equity securities issued. + References No definition available. + Details
Name: | us-gaap_SharesIssuedPricePerShare
Namespace Prefix: | us-gaap_
Data Type: | num:perShareItemType
Balance Type: | na
Period Type: | instant

X
- Definition Number of new stock issued during the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(29)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=84159872&loc=d3e21463-112644 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(28)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 505 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.3-04) -URI http://asc.fasb.org/extlink&oid=27012166&loc=d3e187085-122770 + Details
Name: | us-gaap_StockIssuedDuringPeriodSharesNewIssues
Namespace Prefix: | us-gaap_
Data Type: | xbrli:sharesItemType
Balance Type: | na
Period Type: | duration

X
- Details
Name: | dei_LegalEntityAxis=esrt_QatarInvestmentAuthorityAffiliateMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=us-gaap_CommonClassAMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_ConsolidatedEntitiesAxis=us-gaap_ParentCompanyMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementEquityComponentsAxis=us-gaap_CommonStockMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_PartnerTypeOfPartnersCapitalAccountAxis=us-gaap_GeneralPartnerMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |

X
- Details
Name: | us-gaap_StatementClassOfStockAxis=esrt_SeriesPRCommonUnitsMember
Namespace Prefix: |
Data Type: | na
Balance Type: |
Period Type: |