Related Party Transactions Partnership Agreement (Details) (Investor [Member])	12 Months Ended
Dec. 31, 2013
Investor [Member]
Related Party Transaction [Line Items]
Limited partner rights period after initial public offering	12 months

Related Party Transaction, Limited Partner Rights Period After Initial Public Offering

No definition available.

Name:	esrt_RelatedPartyTransactionLimitedPartnerRightsPeriodAfterInitialPublicOffering
Namespace Prefix:	esrt_
Data Type:	xbrli:durationItemType
Balance Type:	na
Period Type:	duration