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Subsequent Events	12 Months Ended
	Dec. 31, 2013
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events On February 21, 2014, our sole general partner, ESRT, acting through its Board of Directors declared a distribution of $0.085 per unit for the first quarter 2014, payable to holders of ESRT's Class A common stock and Class B common stock and to holders of our Series ES, Series 250 and Series 60 OP Units (NYSE Arca: ESBA, FISK and OGCP, respectively) and Series PR OP Units. The distribution will be payable in cash on March 31, 2014 to securityholders of record at the close of business on March 14, 2014.

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The entire disclosure for significant events or transactions that occurred after the balance sheet date through the date the financial statements were issued or the date the financial statements were available to be issued. Examples include: the sale of a capital stock issue, purchase of a business, settlement of litigation, catastrophic loss, significant foreign exchange rate changes, loans to insiders or affiliates, and transactions not in the ordinary course of business.

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