Condensed Consolidated Statements of Income (USD $) In Thousands, except Per Share data, unless otherwise specified	3 Months Ended
	Mar. 31, 2014	Mar. 31, 2013
Revenues:
Rental revenue	$ 90,204
Tenant expense reimbursement	15,153
Observatory revenue	17,301
Construction revenue	14,963
Third-party management and other fees	611
Other revenue and fees	2,074
Total revenues	140,306	62,420
Operating expenses:
Property operating expenses	36,311
Marketing, general, and administrative expenses	8,675
Observatory expenses	6,981
Construction expenses	14,283
Real estate taxes	18,373
Formation transaction expenses	0
Depreciation and amortization	30,115
Total operating expenses	114,738
Total operating income	25,568
Other income (expense):
Equity in net income of non-controlled entities	0	1,819
Interest expense	(14,337)
Net income	11,231	1,930
Net income attributable to the predecessor	0
Net income attributable to non-controlling interests	(6,862)
Net income attributable to Empire State Realty Trust, Inc.	4,369
Total weighted average shares:
Basic (in shares)	95,575
Diluted (in shares)	95,617
Net income per share attributable to Empire State Realty Trust, Inc.:
Basic earnings per share (in dollars per share)	$ 0.05
Diluted earnings per share (in dollars per share)	$ 0.05
Dividends per share (in dollars per share)	$ 0.085
Predecessor [Member]
Revenues:
Rental revenue		45,266
Tenant expense reimbursement		6,589
Observatory revenue		0
Construction revenue		6,182
Third-party management and other fees		2,657
Other revenue and fees		1,726
Total revenues		62,420
Operating expenses:
Property operating expenses		13,806
Marketing, general, and administrative expenses		6,325
Observatory expenses		0
Construction expenses		6,260
Real estate taxes		7,871
Formation transaction expenses		1,695
Depreciation and amortization		12,156
Total operating expenses		48,113
Total operating income		14,307
Other income (expense):
Equity in net income of non-controlled entities		1,819
Interest expense		(14,196)
Net income		1,930
Net income attributable to the predecessor		(1,930)
Net income attributable to non-controlling interests		0
Net income attributable to Empire State Realty Trust, Inc.		$ 0