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Capital - Incentive and Share-based Compensation (Details) (USD $) In Millions, except Share data, unless otherwise specified | 6 Months Ended
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Jun. 30, 2014
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Expected volatility rate look-back period (in years) | 6 years
Restricted Stock and LTIP Unit Activity [Roll Forward] |
Beginning balance, Unvested, Weighted Average Grant Price, per share | $ 13.00
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period, Weighted Average Grant Date Fair Value | $ 13.58
Granted, Weighted Average Grant Price, per share | $ 15.04
Forfeited, Weighted Average Grant Price, per share | $ (13.21)
Ending balance, Unvested, Weighted Average Grant Price, per share | $ 13.66
Age of grantee at which LTIP unit and restricted stock awards immediately vest | 60 years
Period of service, upon completion of which, grantee's LTIP unit and restricted stock awards will immediately vest | 10 years
Awards that Meet Age and Service Requirements for Vesting [Member] |
Restricted Stock and LTIP Unit Activity [Roll Forward] |
Noncash share-based compensation expense recognized | $ 0.2
Unrecognized compensation expense | 0.5
Unrecognized compensation expense, period for recognition (in years) | 2 years 3 months 18 days
Awards that Do Not Meet Age and Service Requirements for Vesting [Member] |
Restricted Stock and LTIP Unit Activity [Roll Forward] |
Noncash share-based compensation expense recognized | 1.9
Unrecognized compensation expense | 11.4
Unrecognized compensation expense, period for recognition (in years) | 3 years 2 months 12 days
Long-Term Incentive Plan Units and Restricted Stock [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Fair value of share-based awards granted in period | 5.3
Expected term | 3 years
Risk free interest rate | 0.80%
Expected volatility rate | 26.00%
Restricted Stock and LTIP Unit Activity [Roll Forward] |
Granted, Weighted Average Grant Price, per share | $ 10.65
Long-Term Incentive Plan Unit [Member] |
Restricted Stock and LTIP Unit Activity [Roll Forward] |
Beginning balance, Unvested (in shares) | 913,561
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period | 0
Granted (in shares) | 488,613
Forfeited (in shares) | (3,413)
Ending balance, Unvested (in shares) | 1,398,761
Time Based Long-Tern Incentive Plan Unit [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Fair value of share-based awards granted in period | 0.4
Restricted Stock and LTIP Unit Activity [Roll Forward] |
Granted (in shares) | 23,487
Performance Based Long-Term Incentive Plan Unit [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Fair value of share-based awards granted in period | 0.2
Restricted Stock and LTIP Unit Activity [Roll Forward] |
Granted (in shares) | 23,484
Restricted Stock [Member] |
Restricted Stock and LTIP Unit Activity [Roll Forward] |
Beginning balance, Unvested (in shares) | 144,371
Share-based Compensation Arrangement by Share-based Payment Award, Equity Instruments Other than Options, Vested in Period | 5,856
Granted (in shares) | 14,120
Forfeited (in shares) | (10,691)
Ending balance, Unvested (in shares) | 141,944
Long-Term Incentive Plan Unit and Restricted Stock [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Share-based Compensation Arrangement by Share-based Payment Award, Fair Value Assumptions, Expected Dividend Rate | 2.60%
Executive Officer [Member] | Time Based Long-Tern Incentive Plan Unit [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Fair value of share-based awards granted in period | 2.5
Number of Vesting Installments | 4
Award vesting period (in years) | 3 years
Restricted Stock and LTIP Unit Activity [Roll Forward] |
Granted (in shares) | 180,260
Executive Officer [Member] | Performance Based Long-Term Incentive Plan Unit [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Fair value of share-based awards granted in period | 0.9
Number of Vesting Installments | 2
Award vesting period (in years) | 3 years
Restricted Stock and LTIP Unit Activity [Roll Forward] |
Granted (in shares) | 180,263
ESRT [Member] | Performance Restricted Shares [Member] |
Restricted Stock and LTIP Unit Activity [Roll Forward] |
Granted (in shares) | 7,059
ESRT [Member] | Time Restricted Shares [Member] |
Restricted Stock and LTIP Unit Activity [Roll Forward] |
Granted (in shares) | 7,061
2013 Plan [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Number of shares authorized under the plan | 12,220,515
Number of shares that remain available for future issuance | 10,661,347
2013 Plan [Member] | Time Based Long-Tern Incentive Plan Unit [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Fair value of share-based awards granted in period | 0.7
Restricted Stock and LTIP Unit Activity [Roll Forward] |
Granted (in shares) | 48,923
2013 Plan [Member] | Time Based Long-Tern Incentive Plan Unit [Member] | Share-based Compensation Award, Tranche One [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Award vesting period (in years) | 3 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | 30.00%
2013 Plan [Member] | Time Based Long-Tern Incentive Plan Unit [Member] | Share-based Compensation Award, Tranche Two [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Award vesting period (in years) | 4 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | 30.00%
2013 Plan [Member] | Time Based Long-Tern Incentive Plan Unit [Member] | Share-based Compensation Award, Tranche Three [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Award vesting period (in years) | 5 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Rights, Percentage | 40.00%
2013 Plan [Member] | Director [Member] | Time Based Long-Tern Incentive Plan Unit [Member] |
Share-based Compensation Arrangement by Share-based Payment Award [Line Items] |
Fair value of share-based awards granted in period | $ 0.5
Number of Vesting Installments | 3
Restricted Stock and LTIP Unit Activity [Roll Forward] |
Granted (in shares) | 32,196

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- Definition Represents the expense recognized during the period arising from equity-based compensation arrangements (for example, shares of stock, unit, stock options or other equity instruments) with employees, directors and certain consultants qualifying for treatment as employees. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 1 -Subparagraph (b) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5047-113901 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.F) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (h)(1)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 4: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section F + Details
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- Definition Estimated period over which an employee is required to provide service in exchange for the equity-based payment award, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Period which an employee's right to exercise an award is no longer contingent on satisfaction of either a service condition, market condition or a performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Percentage of vesting of share-based compensation awards. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that were forfeited during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(1)(iv)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Weighted average fair value as of the grant date of equity-based award plans other than stock (unit) option plans that were not exercised or put into effect as a result of the occurrence of a terminating event. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value at grant date for nonvested equity-based awards issued during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(1) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of non-vested equity-based payment instruments, excluding stock (or unit) options, that validly exist and are outstanding as of the balance sheet date. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value of nonvested awards on equity-based plans excluding option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, revenue or profit achievement stock award plan) for which the employer is contingently obligated to issue equity instruments or transfer assets to an employee who has not yet satisfied service or performance criteria necessary to gain title to proceeds from the sale of the award or underlying shares or units. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(i)-(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The weighted average fair value as of grant date pertaining to an equity-based award plan other than a stock (or unit) option plan for which the grantee gained the right during the reporting period, by satisfying service and performance requirements, to receive or retain shares or units, other instruments, or cash in accordance with the terms of the arrangement. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (c)(2)(iii)(2) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition Expected term of share-based compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section S99 -Paragraph 1 -Subparagraph (SAB TOPIC 14.D.2) -URI http://asc.fasb.org/extlink&oid=27013229&loc=d3e301413-122809 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(i) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 Reference 3: http://www.xbrl.org/2003/role/presentationRef -Publisher SEC -Name Staff Accounting Bulletin (SAB) -Number Topic 14 -Section D -Subsection 2 + Details
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- Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probability-weighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(ii) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The risk-free interest rate assumption that is used in valuing an option on its own shares. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (f)(2)(iv) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The maximum number of shares (or other type of equity) originally approved (usually by shareholders and board of directors), net of any subsequent amendments and adjustments, for awards under the equity-based compensation plan. As stock or unit options and equity instruments other than options are awarded to participants, the shares or units remain authorized and become reserved for issuance under outstanding awards (not necessarily vested). + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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- Definition The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 718 -SubTopic 10 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=6415400&loc=d3e5070-113901 + Details
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