Consolidated Statements of Capital - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2023	Dec. 31, 2022	Dec. 31, 2021
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance	$ 1,683,091	$ 1,684,332	$ 1,731,307
Conversion of operating partnership units and Class B shares to ESRT Partner's Capital	$ 0	0	0
Repurchase of common units (in shares)	(2,150,857)
Repurchases of common units	$ (13,105)	(90,176)	(46,704)
Contributions to consolidated joint venture interests	187	224	13,269
Equity compensation	20,026	21,011	20,260
Distributions	(41,323)	(42,786)	(32,764)
Net income (loss)	84,407	63,212	(13,037)
Other comprehensive income (loss)	(2,238)	47,274	12,001
Ending balance	$ 1,731,045	$ 1,683,091	$ 1,684,332
General Partner | Series PR Operating Partnership Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in shares)	161,129,000	170,217,000	171,565,000
Beginning balance	$ 954,375	$ 998,128	$ 1,055,249
Conversion of operating partnership units and Class B shares to ESRT Partner's Capital (in shares)	3,756,000	2,298,000	3,498,000
Conversion of operating partnership units and Class B shares to ESRT Partner's Capital	$ 17,671	$ 4,495	$ 10,426
Repurchase of common units (in shares)	(2,151,000)	(11,571,000)	(4,887,000)
Repurchases of common units	$ (13,105)	$ (90,176)	$ (46,704)
Equity compensation (in shares)	312,000	185,000	41,000
Equity compensation	$ 1,395	$ 894	$ 513
Distributions	(22,684)	(23,109)	(18,110)
Net income (loss)	49,044	36,442	(10,711)
Other comprehensive income (loss)	$ (1,178)	$ 27,701	$ 7,465
Ending balance (in shares)	163,046,000	161,129,000	170,217,000
Ending balance	$ 985,518	$ 954,375	$ 998,128
Limited Partners | Series PR Operating Partnership Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in shares)	80,475,000	79,820,000	80,355,000
Beginning balance	$ 681,827	$ 649,157	$ 648,543
Conversion of operating partnership units and Class B shares to ESRT Partner's Capital (in shares)	(2,038,000)	(551,000)	(1,317,000)
Conversion of operating partnership units and Class B shares to ESRT Partner's Capital	$ (17,380)	$ (4,563)	$ (10,643)
Equity compensation (in shares)	1,752,000	1,206,000	782,000
Equity compensation	$ 18,631	$ 20,117	$ 19,747
Distributions	(10,466)	(11,251)	(7,121)
Net income (loss)	22,439	16,116	(4,513)
Other comprehensive income (loss)	$ (539)	$ 12,251	$ 3,144
Ending balance (in shares)	80,189,000	80,475,000	79,820,000
Ending balance	$ 694,512	$ 681,827	$ 649,157
Limited Partners | Series ES Operating Partnership Units Limited Partners
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in shares)	21,081,000	22,321,000	23,678,000
Beginning balance	$ 1,391	$ (4,058)	$ (1,348)
Conversion of operating partnership units and Class B shares to ESRT Partner's Capital (in shares)	(1,134,000)	(1,240,000)	(1,357,000)
Conversion of operating partnership units and Class B shares to ESRT Partner's Capital	$ (215)	$ 26	$ 105
Distributions	(2,850)	(3,025)	(2,382)
Net income (loss)	6,251	4,800	(1,429)
Other comprehensive income (loss)	$ (150)	$ 3,648	$ 996
Ending balance (in shares)	19,947,000	21,081,000	22,321,000
Ending balance	$ 4,427	$ 1,391	$ (4,058)
Limited Partners | Series 60 Operating Partnership Units Limited Partners
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in shares)	5,558,000	5,884,000	6,424,000
Beginning balance	$ 16	$ (1,395)	$ (721)
Conversion of operating partnership units and Class B shares to ESRT Partner's Capital (in shares)	(414,000)	(326,000)	(540,000)
Conversion of operating partnership units and Class B shares to ESRT Partner's Capital	$ (53)	$ 21	$ 73
Distributions	(749)	(800)	(632)
Net income (loss)	1,603	1,244	(379)
Other comprehensive income (loss)	$ (38)	$ 946	$ 264
Ending balance (in shares)	5,144,000	5,558,000	5,884,000
Ending balance	$ 779	$ 16	$ (1,395)
Limited Partners | Series 250 Operating Partnership Units Limited Partners
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in shares)	2,789,000	2,970,000	3,255,000
Beginning balance	$ 76	$ (692)	$ (356)
Conversion of operating partnership units and Class B shares to ESRT Partner's Capital (in shares)	(170,000)	(181,000)	(285,000)
Conversion of operating partnership units and Class B shares to ESRT Partner's Capital	$ (23)	$ 21	$ 39
Distributions	(373)	(400)	(318)
Net income (loss)	801	652	(189)
Other comprehensive income (loss)	$ (19)	$ 495	$ 132
Ending balance (in shares)	2,619,000	2,789,000	2,970,000
Ending balance	$ 462	$ 76	$ (692)
Private Perpetual Preferred Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in shares)	6,224,000	6,224,000	6,224,000
Beginning balance	$ 29,940	$ 29,940	$ 29,940
Distributions	(4,201)	(4,201)	(4,201)
Net income (loss)	$ 4,201	$ 4,201	$ 4,201
Ending balance (in shares)	6,224,000	6,224,000	6,224,000
Ending balance	$ 29,940	$ 29,940	$ 29,940
Non-controlling Interest in Other Partnerships
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance	15,466	13,252	0
Contributions to consolidated joint venture interests	187	224	13,269
Net income (loss)	68	(243)	(17)
Other comprehensive income (loss)	(314)	2,233
Ending balance	$ 15,407	$ 15,466	$ 13,252