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Debt - Schedule of Maturities of Long-term Debt (Details) (Mortgages [Member], USD $) In Thousands, unless otherwise specified | Mar. 31, 2015 | Dec. 31, 2014
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Mortgages [Member] |  |
Debt Instrument [Line Items] |  |
2015 Amortization | $ 8,833 esrt_LongtermDebtMaturitiesRepaymentsofPrincipalinNextTwelveMonthsPortionAttributabletoAmortization / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
2016 Amortization | 12,387 esrt_LongtermDebtMaturitiesRepaymentsofPrincipalinYearTwoPortionAttributabletoAmortization / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
2017 Amortization | 10,070 esrt_LongtermDebtMaturitiesRepaymentsofPrincipalinYearThreePortionAttributabletoAmortization / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
2018 Amortization | 2,880 esrt_LongtermDebtMaturitiesRepaymentsofPrincipalinYearFourPortionAttributabletoAmortization / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
2019 Amortization | 2,188 esrt_LongtermDebtMaturitiesRepaymentsofPrincipalinYearFivePortionAttributabletoAmortization / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
2020 and thereafter amortization | 11,975 esrt_LongtermDebtMaturitiesRepaymentsofPrincipalafterYearFivePortionAttributabletoAmortization / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Total amortization | 48,333 esrt_LongtermDebtMaturitiesRepaymentsofPrincipalPortionAttributabletoAmortization / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
2015 Maturities | 0 esrt_LongtermDebtMaturitiesRepaymentsofPrincipalinNextTwelveMonthsPrincipalMaturities / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
2016 Maturities | 0 esrt_LongtermDebtMaturitiesRepaymentsofPrincipalinYearTwoPrincipalMaturities / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
2017 Maturities | 446,761 esrt_LongtermDebtMaturitiesRepaymentsofPrincipalinYearThreePrincipalMaturities / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
2018 Maturities | 262,210 esrt_LongtermDebtMaturitiesRepaymentsofPrincipalinYearFourPrincipalMaturities / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
2019 Maturities | 415,000 esrt_LongtermDebtMaturitiesRepaymentsofPrincipalinYearFivePrincipalMaturities / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
2020 and thereafter maturities | 427,675 esrt_LongtermDebtMaturitiesRepaymentsofPrincipalafterYearFivePrincipalMaturities / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Total maturities | 1,551,646 esrt_LongtermDebtMaturitiesRepaymentsofPrincipalPrincipalMaturities / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
2015 | 8,833 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInNextTwelveMonths / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
2016 | 12,387 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearTwo / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
2017 | 456,831 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearThree / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
2018 | 265,090 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFour / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
2019 | 417,188 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalInYearFive / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
2020 and thereafter | 439,650 us-gaap_LongTermDebtMaturitiesRepaymentsOfPrincipalAfterYearFive / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember |
Total | $ 1,599,979 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember | $ 1,602,062 us-gaap_DebtInstrumentCarryingAmount / us-gaap_LongtermDebtTypeAxis = us-gaap_MortgagesMember

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- Definition Long-term Debt, Maturities, Repayments of Principal after Year Five, Portion Attributable to Amortization + References No definition available. + Details
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- Definition Long-term Debt, Maturities, Repayments of Principal after Year Five, Principal Maturities + References No definition available. + Details
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- Definition Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months, Portion Attributable to Amortization + References No definition available. + Details
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- Definition Long-term Debt, Maturities, Repayments of Principal in Next Twelve Months, Principal Maturities + References No definition available. + Details
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- Definition Long-term Debt, Maturities, Repayments of Principal in Year Five, Portion Attributable to Amortization + References No definition available. + Details
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- Definition Long-term Debt, Maturities, Repayments of Principal in Year Five, Principal Maturities + References No definition available. + Details
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- Definition Long-term Debt, Maturities, Repayments of Principal in Year Four, Portion Attributable to Amortization + References No definition available. + Details
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- Definition Long-term Debt, Maturities, Repayments of Principal in Year Three, Portion Attributable to Amortization + References No definition available. + Details
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- Definition Long-term Debt, Maturities, Repayments of Principal in Year Three, Principal Maturities + References No definition available. + Details
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- Definition Long-term Debt, Maturities, Repayments of Principal in Year Two, Portion Attributable to Amortization + References No definition available. + Details
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- Definition Long-term Debt, Maturities, Repayments of Principal in Year Two, Principal Maturities + References No definition available. + Details
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- Definition Long-term Debt, Maturities, Repayments of Principal, Portion Attributable to Amortization + References No definition available. + Details
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- Definition Long-term Debt, Maturities, Repayments of Principal, Principal Maturities + References No definition available. + Details
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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 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 2: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Regulation S-X (SX) -Number 210 -Section 02 -Paragraph 20 -Article 5 Reference 3: 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 Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing after the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 + Details
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- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the next fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 + Details
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- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fifth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 + Details
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- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the fourth fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 + Details
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- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the third fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 + Details
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- Definition Amount of long-term debt payable, sinking fund requirements, and other securities issued that are redeemable by holder at fixed or determinable prices and dates maturing in the second fiscal year following the latest fiscal year. Excludes interim and annual periods when interim periods are reported on a rolling approach, from latest balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 470 -SubTopic 10 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6802200&loc=d3e1835-112601 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 235 -SubTopic 10 -Section S99 -Paragraph 3 -Subparagraph (SX 210.12-04.(a)) -URI http://asc.fasb.org/extlink&oid=26873400&loc=d3e24072-122690 + Details
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