XML 97 R51.htm IDEA: XBRL DOCUMENT
v2.4.1.9

Debt Schedule of Long term Debt (Details) (USD $) | 0 Months Ended | 12 Months Ended |
--- | --- | --- | ---
Nov. 05, 2014 | Feb. 01, 2014 | Dec. 31, 2014 | Dec. 31, 2013
Debt Instrument [Line Items] |  |  |  |
Total |  |  | 903,985,000 us-gaap_LongTermDebt | $ 883,112,000 us-gaap_LongTermDebt
Mortgages [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 746,916,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 824,088,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Floating rate debt |  |  | 135,146,000 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 47,331,000 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Total mortgage debt |  |  | 882,062,000 esrt_LongTermDebtFixedRateDebtandFloatingRateDebtLessCreditFacilityandUnsecuredNotesTotal / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 871,419,000 esrt_LongTermDebtFixedRateDebtandFloatingRateDebtLessCreditFacilityandUnsecuredNotesTotal / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Total principal |  |  | 1,602,062,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 1,196,419,000 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Unamortized premiums, net of unamortized discount |  |  | 9,590,000 us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 11,693,000 us-gaap_DebtInstrumentUnamortizedDiscountPremiumNet / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Total |  |  | 1,611,652,000 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 1,208,112,000 us-gaap_LongTermDebt / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Mortgages [Member] | 10 Union Square [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 20,641,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt10UnionSquareMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 20,972,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt10UnionSquareMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Stated Rate |  |  | 6.00%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt10UnionSquareMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Effective Rate |  |  | 6.77%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt10UnionSquareMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Mortgages [Member] | 10 Bank Street [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 32,847,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt10BankStreetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 33,444,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt10BankStreetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Stated Rate |  |  | 5.72%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt10BankStreetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Effective Rate |  |  | 6.21%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt10BankStreetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Mortgages [Member] | 1542 Third Avenue [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 18,628,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1542ThirdAvenueMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 19,011,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1542ThirdAvenueMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Stated Rate |  |  | 5.90%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1542ThirdAvenueMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Effective Rate |  |  | 6.60%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1542ThirdAvenueMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Mortgages [Member] | First Stamford Place [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 242,294,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebtFirstStamfordPlaceMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 245,629,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebtFirstStamfordPlaceMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Stated Rate |  |  | 5.65%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebtFirstStamfordPlaceMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Effective Rate |  |  | 6.15%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebtFirstStamfordPlaceMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Mortgages [Member] | 383 Main Avenue [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 29,852,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt383MainAvenueMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 30,403,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt383MainAvenueMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Stated Rate |  |  | 5.59%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt383MainAvenueMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Effective Rate |  |  | 6.09%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt383MainAvenueMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Mortgages [Member] | 1010 Third Avenue and 77 West 55th Street [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 27,595,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1010ThirdAvenueand77West55thStreetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 28,096,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1010ThirdAvenueand77West55thStreetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Stated Rate |  |  | 5.69%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1010ThirdAvenueand77West55thStreetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Effective Rate |  |  | 6.20%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1010ThirdAvenueand77West55thStreetMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Mortgages [Member] | 1333 Broadway [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 69,575,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1333BroadwayMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 70,447,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1333BroadwayMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Stated Rate |  |  | 6.32%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1333BroadwayMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Effective Rate |  |  | 3.82%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1333BroadwayMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Mortgages [Member] | 1400 Broadway - First Lien [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 69,689,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_A1400BroadwayFirstLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 0 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_A1400BroadwayFirstLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Stated Rate |  |  | 6.12%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = esrt_A1400BroadwayFirstLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Effective Rate |  |  | 3.80%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = esrt_A1400BroadwayFirstLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Mortgages [Member] | 1400 Broadway - Second Lien [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 9,803,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_A1400BroadwaySecondLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 0 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_A1400BroadwaySecondLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Stated Rate |  |  | 3.35%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = esrt_A1400BroadwaySecondLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Effective Rate |  |  | 1.00%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = esrt_A1400BroadwaySecondLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Mortgages [Member] | 112 West 34th Street - First Lien [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 77,484,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_A112West34thStreetFirstLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 0 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_A112West34thStreetFirstLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Stated Rate |  |  | 6.01%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = esrt_A112West34thStreetFirstLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Effective Rate |  |  | 3.45%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = esrt_A112West34thStreetFirstLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Mortgages [Member] | 112 West 34th Street - Second Lien [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 9,763,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_A112West34thStreetSecondLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 0 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_A112West34thStreetSecondLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Stated Rate |  |  | 6.56%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = esrt_A112West34thStreetSecondLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Effective Rate |  |  | 4.01%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = esrt_A112West34thStreetSecondLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Mortgages [Member] | 1350 Broadway - First Lien Mortgage Loan [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 38,900,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1350BroadwayFirstLienMortgageLoanMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 39,420,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1350BroadwayFirstLienMortgageLoanMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Stated Rate |  |  | 5.87%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1350BroadwayFirstLienMortgageLoanMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Effective Rate |  |  | 3.60%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1350BroadwayFirstLienMortgageLoanMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Mortgages [Member] | Metro Center [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 99,845,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_MetroCenterDebtMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 96,158,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_MetroCenterDebtMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Stated Rate |  |  | 3.59%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = esrt_MetroCenterDebtMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Effective Rate |  |  | 3.66%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = esrt_MetroCenterDebtMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Payments for Fees | 2,800,000 us-gaap_PaymentsOfDebtRestructuringCosts / us-gaap_DebtInstrumentAxis = esrt_MetroCenterDebtMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |  |  |
Mortgages [Member] | One Grand Central Place - First Lien [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 0 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebtOneGrandCentralPlaceFirstLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 71,723,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebtOneGrandCentralPlaceFirstLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Mortgages [Member] | One Grand Central Place - Second Lien [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 0 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebtOneGrandCentralPlaceSecondLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 14,884,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebtOneGrandCentralPlaceSecondLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Mortgages [Member] | 500 Mamaroneck Avenue [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 0 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt500MamaroneckAvenueMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 32,620,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt500MamaroneckAvenueMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Mortgages [Member] | 250 West 57th Street - First Lien [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 0 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt250West57thStreetFirstLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 25,621,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt250West57thStreetFirstLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Mortgages [Member] | 250 West 57th Street - Second Lien [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 0 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt250West57thStreetSecondLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 11,252,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt250West57thStreetSecondLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Mortgages [Member] | 501 Seventh Avenue - Note 1 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 0 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt501SeventhAvenueNote1Member / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 1,037,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt501SeventhAvenueNote1Member / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Mortgages [Member] | 501 Seventh Avenue - Note 2 - Tranche 1 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 0 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt501SeventhAvenueNote2Tranche1Member / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 31,459,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt501SeventhAvenueNote2Tranche1Member / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Mortgages [Member] | 501 Seventh Avenue - Note 2 - Tranche 2 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 0 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt501SeventhAvenueNote2Tranche2Member / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 6,889,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt501SeventhAvenueNote2Tranche2Member / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Mortgages [Member] | 1359 Broadway - First Lien [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 0 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1359BroadwayFirstLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 9,579,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1359BroadwayFirstLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Mortgages [Member] | 1359 Broadway - Second Lien - Tranche 1 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 0 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1359BroadwaySecondLienTranche1Member / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 5,561,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1359BroadwaySecondLienTranche1Member / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Mortgages [Member] | 1359 Broadway - Second Lien - Tranche 2 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 0 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1359BroadwaySecondLienTranche2Member / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 11,311,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1359BroadwaySecondLienTranche2Member / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Mortgages [Member] | 1359 Broadway - Second Lien - Tranche 3 [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 0 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1359BroadwaySecondLienTranche3Member / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 18,572,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1359BroadwaySecondLienTranche3Member / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Mortgages [Member] | Fixed Rate Debt, 1359 Broadway [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Floating rate debt |  |  | 44,146,000 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1359BroadwayMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 0 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1359BroadwayMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Mortgages [Member] | Fixed Rate Debt, 1359 Broadway [Member] | LIBOR [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable rate |  | 1.75%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1359BroadwayMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |
Interest rate at end of period |  |  | 1.92%us-gaap_DebtInstrumentInterestRateAtPeriodEnd / us-gaap_DebtInstrumentAxis = esrt_FixedRateDebt1359BroadwayMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |
Mortgages [Member] | One Grand Central Place [Member] | LIBOR [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable rate | 1.35%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = esrt_OneGrandCentralPlaceMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |  |  |
Interest rate at end of period |  |  | 1.52%us-gaap_DebtInstrumentInterestRateAtPeriodEnd / us-gaap_DebtInstrumentAxis = esrt_OneGrandCentralPlaceMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |
Mortgages [Member] | One Grand Central Place [Member] | Prime Rate [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Floating rate debt |  |  | 91,000,000 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_DebtInstrumentAxis = esrt_OneGrandCentralPlaceMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_VariableRateAxis = us-gaap_PrimeRateMember | 0 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_DebtInstrumentAxis = esrt_OneGrandCentralPlaceMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_VariableRateAxis = us-gaap_PrimeRateMember
Mortgages [Member] | One Grand Central Place - Third Lien [Member] | Prime Rate [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Floating rate debt |  |  | 0 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FloatingRateDebtOneGrandCentralPlaceThirdLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_VariableRateAxis = us-gaap_PrimeRateMember | 6,382,000 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FloatingRateDebtOneGrandCentralPlaceThirdLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_VariableRateAxis = us-gaap_PrimeRateMember
Mortgages [Member] | 250 West 57th Street - Third lien [Member] | Prime Rate [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Floating rate debt |  |  | 0 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FloatingRateDebt250West57thStreetThirdlienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_VariableRateAxis = us-gaap_PrimeRateMember | 21,000,000 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FloatingRateDebt250West57thStreetThirdlienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_VariableRateAxis = us-gaap_PrimeRateMember
Mortgages [Member] | 501 Seventh Avenue - Third Lien [Member] | LIBOR [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Floating rate debt |  |  | 0 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FloatingRateDebt501SeventhAvenueThirdLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember | 6,540,000 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FloatingRateDebt501SeventhAvenueThirdLienMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember
Mortgages [Member] | 1350 Broadway - 2nd Lien Mortgage Loan [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Floating rate debt |  |  | 0 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FloatingRateDebt1350Broadway2ndLienMortgageLoanMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 13,409,000 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FloatingRateDebt1350Broadway2ndLienMortgageLoanMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Mortgages [Member] | Secured Revolving Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Floating rate debt |  |  | 170,000,000 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FloatingRateDebtSecuredRevolvingCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 25,000,000 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FloatingRateDebtSecuredRevolvingCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Mortgages [Member] | Secured Revolving Credit Facility [Member] | LIBOR [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable rate |  |  | 1.20%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = esrt_FloatingRateDebtSecuredRevolvingCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |
Interest rate at end of period |  |  | 1.37%us-gaap_DebtInstrumentInterestRateAtPeriodEnd / us-gaap_DebtInstrumentAxis = esrt_FloatingRateDebtSecuredRevolvingCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |
Mortgages [Member] | Secured Term Credit Facility [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Floating rate debt |  |  | 300,000,000 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FloatingRateDebtSecuredTermCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | 300,000,000 us-gaap_LongtermDebtPercentageBearingVariableInterestAmount / us-gaap_DebtInstrumentAxis = esrt_FloatingRateDebtSecuredTermCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Mortgages [Member] | Secured Term Credit Facility [Member] | LIBOR [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable rate |  |  | 1.35%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = esrt_FloatingRateDebtSecuredTermCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |
Interest rate at end of period |  |  | 1.52%us-gaap_DebtInstrumentInterestRateAtPeriodEnd / us-gaap_DebtInstrumentAxis = esrt_FloatingRateDebtSecuredTermCreditFacilityMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember / us-gaap_VariableRateAxis = us-gaap_LondonInterbankOfferedRateLIBORMember |
Mortgages [Member] | Exchangeable Senior Notes [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Fixed rate debt |  |  | 250,000,000 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_ExchangeableSeniorNotesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | $ 0 us-gaap_LongtermDebtPercentageBearingFixedInterestAmount / us-gaap_DebtInstrumentAxis = esrt_ExchangeableSeniorNotesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember
Stated Rate |  |  | 2.625%us-gaap_DebtInstrumentInterestRateStatedPercentage / us-gaap_DebtInstrumentAxis = esrt_ExchangeableSeniorNotesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Effective Rate |  |  | 3.95%us-gaap_DebtInstrumentInterestRateEffectivePercentage / us-gaap_DebtInstrumentAxis = esrt_ExchangeableSeniorNotesMember / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Interest Rate Fix Option 1 [Member] | Mortgages [Member] | 250 West 57th Street - Third lien [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable rate |  |  | 3.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = esrt_FloatingRateDebt250West57thStreetThirdlienMember / esrt_InterestRateFixOptionAxis = esrt_InterestRateFixOption1Member / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Interest Rate Fix Option 2 [Member] | Mortgages [Member] | 250 West 57th Street - Third lien [Member] |  |  |  |
Debt Instrument [Line Items] |  |  |  |
Basis spread on variable rate |  |  | 3.00%us-gaap_DebtInstrumentBasisSpreadOnVariableRate1 / us-gaap_DebtInstrumentAxis = esrt_FloatingRateDebt250West57thStreetThirdlienMember / esrt_InterestRateFixOptionAxis = esrt_InterestRateFixOption2Member / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |

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- Definition Amount of long-term debt before deduction of unamortized discount or premium. Includes, but is not limited to, notes payable, bonds payable, commercial loans, mortgage loans, convertible debt, subordinated debt and other types of debt, with initial maturities beyond one year or the normal operating cycle, if longer. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 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 210.5-02.22) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 03 -Paragraph 16 -Article 9 + Details
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- Definition The effective interest rate at the end of the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 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 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Effective interest rate for the funds borrowed under the debt agreement considering interest compounding and original issue discount or premium. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 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 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition Contractual interest rate for funds borrowed, under the debt agreement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 22 -Article 5 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 210 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02.22(a)(1)) -URI http://asc.fasb.org/extlink&oid=6877327&loc=d3e13212-122682 + Details
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- Definition The amount of debt discount (net of debt premium) that was originally recognized at the issuance of the instrument that has yet to be amortized. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28551-108399 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 3 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28555-108399 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 4 -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28567-108399 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 45 -Paragraph 1A -URI http://asc.fasb.org/extlink&oid=6451184&loc=d3e28541-108399 Reference 5: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 835 -SubTopic 30 -Section 55 -Paragraph 8 -URI http://asc.fasb.org/extlink&oid=6584090&loc=d3e28878-108400 + Details
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