Acquisitions - Schedule of Pro Forma Information (Details) (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
Mar. 31, 2014
Business Combinations [Abstract]
Total revenues	$ 157,692
Net income attributable to Empire State Realty Trust, Inc.	9,197
Net income attributable to Empire State Realty Trust, Inc.	$ 3,375
Net income attributable to Empire State Realty Trust, Inc. per share - basic and diluted	$ 0.03

Business Acquisition, Pro Forma Earnings Per Share, Basic and Diluted

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- Definition

Business Acquisition, Pro Forma Net Income (Loss) including Portion Attributable to Noncontrolling Interest

+ References

No definition available.

+ Details

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- Definition

The pro forma net Income or Loss for the period as if the business combination or combinations had been completed at the beginning of a period.

+ References

Reference 1: http://www.xbrl.org/2003/role/presentationRef

-Publisher FASB

-Name Accounting Standards Codification

-Topic 805

-SubTopic 10

-Section 50

-Paragraph 2

-Subparagraph (h)(2)-(3)

-URI http://asc.fasb.org/extlink&oid=56956515&loc=d3e1392-128463

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- Definition

The pro forma revenue for a period as if the business combination or combinations had been completed at the beginning of the period.

+ References

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