Equity - Earnings Per Share (Details) (USD $) In Thousands, unless otherwise specified	3 Months Ended
	Mar. 31, 2014
Numerator:
Net income attributable to Empire State Realty Trust, Inc. - basic and diluted	$ 4,369
Denominator:
Weighted average shares outstanding - basic (in shares)	95,575
Effective of dilutive securities - share-based compensation	42
Weighted average shares outstanding - dilutive	95,617