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Rental Income (Details) (Predecessor [Member])	9 Months Ended
	Sep. 30, 2013
Minimum [Member]
Operating Leases [Line Items]
Term of lease	1 year
Maximum [Member]
Operating Leases [Line Items]
Term of lease	18 years

X

- Details

Name:	esrt_OperatingLeasesLineItems
Namespace Prefix:	esrt_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

X

- Definition

Term of the lessor's leasing arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

+ References

No definition available.

+ Details

Name:	us-gaap_LessorLeasingArrangementsOperatingLeasesTermOfContract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration