Empire State Realty OP (FISK) 10-Q 3 Nov 22 2022 Q3 Quarterly report Financial data

Cover

Cover - shares	9 Months Ended
	Sep. 30, 2022	Oct. 28, 2022
Document Information [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Sep. 30, 2022
Document Transition Report	false
Entity File Number	001-36106
Entity Registrant Name	EMPIRE STATE REALTY OP, L.P.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	45-4685158
Entity Address, Address Line One	111 West 33rd Street
Entity Address, Address Line Two	12th Floor
Entity Address, City or Town	New York
Entity Address, State or Province	NY
Entity Address, Postal Zip Code	10120
City Area Code	212
Local Phone Number	850-2600
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Entity Central Index Key	0001553079
Current Fiscal Year End Date	--12-31
Amendment Flag	false
Document Fiscal Year Focus	2022
Document Fiscal Period Focus	Q3
Series ES Operating Partnership Units Limited Partners
Document Information [Line Items]
Title of 12(b) Security	Series ES operating partnership units
Trading Symbol	ESBA
Security Exchange Name	NYSEArca
Entity Common Stock, Shares Outstanding		21,319,214
Series 60 Operating Partnership Units Limited Partners
Document Information [Line Items]
Title of 12(b) Security	Series 60 operating partnership units
Trading Symbol	OGCP
Security Exchange Name	NYSEArca
Entity Common Stock, Shares Outstanding		5,647,217
Series 250 operating partnership units
Document Information [Line Items]
Title of 12(b) Security	Series 250 operating partnership units
Trading Symbol	FISK
Security Exchange Name	NYSEArca
Entity Common Stock, Shares Outstanding		2,816,767

Condensed Consolidated Balance

Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Commercial real estate properties, at cost:
Land	$ 334,598	$ 336,278
Development costs	8,162	8,131
Building and improvements	3,194,787	3,156,508
Commercial real estate properties, at cost	3,537,547	3,500,917
Less: accumulated depreciation	(1,159,364)	(1,072,938)
Commercial real estate properties, net	2,378,183	2,427,979
Cash and cash equivalents	387,248	423,695
Restricted cash	52,567	50,943
Tenant and other receivables	30,547	18,647
Deferred rent receivables	239,750	224,922
Prepaid expenses and other assets	72,905	76,549
Deferred costs, net	188,706	202,437
Acquired below-market ground leases, net	331,030	336,904
Right of use assets	28,725	28,892
Goodwill	491,479	491,479
Total assets	4,201,140	4,282,447
Liabilities:
Mortgage notes payable, net	915,202	948,769
Senior unsecured notes, net	973,607	973,373
Unsecured term loan facilities, net	388,645	388,223
Unsecured revolving credit facility	0	0
Accounts payable and accrued expenses	94,436	120,810
Acquired below-market leases, net	18,897	24,941
Ground lease liabilities	28,725	28,892
Deferred revenue and other liabilities	80,249	84,358
Tenants’ security deposits	27,550	28,749
Total liabilities	2,527,311	2,598,115
Commitments and contingencies
Capital:
Total Empire State Realty OP, L.P.'s capital	1,658,327	1,671,080
Non-controlling interest in other partnerships	15,502	13,252
Total capital	1,673,829	1,684,332
Total liabilities and capital	4,201,140	4,282,447
Private perpetual preferred units, series 2019
Capital:
Private perpetual preferred units	21,936	21,936
Private perpetual preferred units, series 2014
Capital:
Private perpetual preferred units	8,004	8,004
Series PR Operating Partnership Units
Capital:
ESRT partner's capital (2,725 and 2,812 general partner operating partnership units and 158,844 and 167,405 limited partner operating partnership units outstanding in 2022 and 2021, respectively)	952,379	998,128
Limited partner operating partnership units	675,818	649,157
Series ES Operating Partnership Units Limited Partners
Capital:
Limited partner operating partnership units	470	(4,058)
Series 60 Operating Partnership Units Limited Partners
Capital:
Limited partner operating partnership units	(223)	(1,395)
Series 250 Operating Partnership Units Limited Partners
Capital:
Limited partner operating partnership units	$ (57)	$ (692)

Condensed Consolidated Balanc_2

Condensed Consolidated Balance Sheets (Parenthetical) - $ / shares	Sep. 30, 2022	Dec. 31, 2021
Private perpetual preferred units, series 2019
Capital:
Private perpetual preferred units, liquidation preference (in USD per share)	$ 13.52	$ 13.52
Private perpetual preferred units, issued (in shares)	4,664,038	4,664,000
Private perpetual preferred units, outstanding (in shares)	4,664,000	4,664,000
Private perpetual preferred units, series 2014
Capital:
Private perpetual preferred units, liquidation preference (in USD per share)	$ 16.62	$ 16.62
Private perpetual preferred units, issued (in shares)	1,560,000	1,560,000
Private perpetual preferred units, outstanding (in shares)	1,560,000	1,560,000
Series PR Operating Partnership Units
Capital:
Limited partner operating partnership units, outstanding (in shares)	81,034,000	79,820,000
Series ES Operating Partnership Units Limited Partners
Capital:
Limited partner operating partnership units, outstanding (in shares)	21,422,000	22,321,000
Series 60 Operating Partnership Units Limited Partners
Capital:
Limited partner operating partnership units, outstanding (in shares)	5,678,000	5,885,000
Series 250 Operating Partnership Units Limited Partners
Capital:
Limited partner operating partnership units, outstanding (in shares)	2,824,000	2,971,000
ESRT | Series PR Operating Partnership Units
Capital:
General partner operating partnership units, outstanding (in shares)	2,725,000	2,812,000
Limited partner operating partnership units, outstanding (in shares)	158,844,000	167,405,000

Condensed Consolidated Statemen

Condensed Consolidated Statements of Operations - USD ($) shares in Thousands, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Revenues:
Rental revenue	$ 148,290	$ 139,558	$ 445,143	$ 420,586
Observatory revenue	33,051	12,796	73,660	23,758
Lease termination fees	0	11,321	20,032	15,949
Third-party management and other fees	389	314	1,025	917
Other revenue and fees	1,982	1,059	5,908	2,550
Total revenues	183,712	165,048	545,768	463,760
Operating expenses:
Property operating expenses	42,798	33,357	118,875	92,429
Ground rent expenses	2,331	2,331	6,994	6,994
General and administrative expenses	15,725	14,427	45,287	42,369
Observatory expenses	8,516	6,370	22,507	16,226
Real estate taxes	31,831	29,566	91,637	92,367
Depreciation and amortization	46,984	65,794	172,394	155,339
Total operating expenses	148,185	151,845	457,694	405,724
Total operating income (loss)	35,527	13,203	88,074	58,036
Other income (expense):
Interest income	1,564	211	2,144	497
Interest expense	(25,516)	(23,577)	(75,572)	(70,553)
Loss on early extinguishment of debt	0	0	0	(214)
Gain on disposition of property	0	0	27,170	0
Income (loss) before income taxes	11,575	(10,163)	41,816	(12,234)
Income tax (expense) benefit	(1,457)	(20)	(224)	3,271
Net income (loss)	10,118	(10,183)	41,592	(8,963)
Private perpetual preferred unit distributions	(1,050)	(1,050)	(3,151)	(3,151)
Net loss attributable to non-controlling interest in other partnerships	49	0	271	0
Net income (loss) attributable to common unitholders	$ 9,117	$ (11,233)	$ 38,712	$ (12,114)
Total weighted average units:
Basic (in shares)	266,035	277,716	269,880	277,829
Diluted (in shares)	267,121	277,716	270,966	277,829
Earnings per unit attributable to common unitholders:
Basic (in USD per share)	$ 0.03	$ (0.04)	$ 0.14	$ (0.04)
Diluted (in USD per share)	0.03	(0.04)	0.14	(0.04)
Dividends per unit ((in USD per share)	$ 0.035	$ 0.035	$ 0.105	$ 0.070

Condensed Consolidated Statem_2

Condensed Consolidated Statements of Comprehensive Income (Loss) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Statement of Comprehensive Income [Abstract]
Net income (loss)	$ 10,118	$ (10,183)	$ 41,592	$ (8,963)
Other comprehensive income:
Unrealized gain (loss) on valuation of interest rate swap agreements	19,588	(103)	39,407	(139)
Less: amount reclassified into interest expense	1,392	2,920	7,428	8,687
Other comprehensive income	20,980	2,817	46,835	8,548
Comprehensive income (loss)	31,098	(7,366)	88,427	(415)
Net loss attributable to non-controlling interest in other partnerships	49	0	271	0
Other comprehensive income attributable to non-controlling interest	(670)	0	(2,297)	0
Comprehensive income (loss) attributable to OP unitholders	$ 30,477	$ (7,366)	$ 86,401	$ (415)

Condensed Consolidated Statem_3

Condensed Consolidated Statements of Capital - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Sep. 30, 2022	Jul. 31, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance		$ 1,666,093	$ 1,666,093	$ 1,733,208	$ 1,684,332	$ 1,731,307
Issuance of OP units, net of costs			0	0
Conversion of operating partnership units to ESRT Partner's Capital			0	0	0	0
Contributions from consolidated joint ventures			0		224
Repurchases of common units (in shares)	(1,761,561)	(184,045)
Repurchases of common units			(18,105)	(6,510)	(82,545)	(10,043)
Equity compensation			5,374	5,378	15,599	15,416
Distributions			(10,631)	(11,029)	(32,208)	(22,584)
Net income (loss)			10,118	(10,183)	41,592	(8,963)
Other comprehensive income			20,980	2,817	46,835	8,548
Ending balance	$ 1,673,829		$ 1,673,829	$ 1,713,681	$ 1,673,829	$ 1,713,681
General Partner | Series PR Operating Partnership Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in shares)		163,684,000	163,684,000	173,400,000	170,217,000	171,565,000
Beginning balance		$ 957,803	$ 957,803	$ 1,055,659	$ 998,128	$ 1,055,249
Conversion of operating partnership units to ESRT Partner's Capital (in shares)			461,000	542,000	1,599,000	2,682,000
Conversion of operating partnership units to ESRT Partner's Capital			$ 39	$ 931	$ 2,384	$ 7,766
Repurchases of common units (in shares)			(2,567,000)	(626,000)	(10,433,000)	(1,009,000)
Repurchases of common units			$ (18,105)	$ (6,510)	$ (82,545)	$ (10,043)
Equity compensation (in shares)			(8,000)	(24,000)	187,000	54,000
Equity compensation			$ 317	$ 180	$ 574	$ 344
Distributions			(5,694)	(6,061)	(17,444)	(12,124)
Net income (loss)			5,557	(6,977)	23,847	(7,523)
Other comprehensive income			$ 12,462	$ 1,756	$ 27,435	$ 5,309
Ending balance (in shares)	161,570,000		161,570,000	173,292,000	161,570,000	173,292,000
Ending balance	$ 952,379		$ 952,379	$ 1,038,978	$ 952,379	$ 1,038,978
Limited Partners | Series PR Operating Partnership Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in shares)		81,073,000	81,073,000	80,241,000	79,820,000	80,355,000
Beginning balance		$ 665,520	$ 665,520	$ 650,473	$ 649,157	$ 648,543
Conversion of operating partnership units to ESRT Partner's Capital (in shares)			(39,000)	(119,000)	(348,000)	(982,000)
Conversion of operating partnership units to ESRT Partner's Capital			$ (4)	$ (960)	$ (2,503)	$ (7,918)
Equity compensation (in shares)				33,000	1,562,000	782,000
Equity compensation			5,057	$ 5,198	$ 15,025	$ 15,072
Distributions			(2,837)	(2,806)	(8,421)	(5,068)
Net income (loss)			2,529	(2,954)	10,490	(3,186)
Other comprehensive income			$ 5,553	$ 739	$ 12,070	$ 2,247
Ending balance (in shares)	81,034,000		81,034,000	80,155,000	81,034,000	80,155,000
Ending balance	$ 675,818		$ 675,818	$ 649,690	$ 675,818	$ 649,690
Limited Partners | Series ES Operating Partnership Units Limited Partners
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in shares)		21,746,000	21,746,000	22,923,000	22,321,000	23,678,000
Beginning balance		$ (1,137)	$ (1,137)	$ (1,692)	$ (4,058)	$ (1,348)
Conversion of operating partnership units to ESRT Partner's Capital (in shares)			(324,000)	(312,000)	(899,000)	(1,067,000)
Conversion of operating partnership units to ESRT Partner's Capital			$ (27)	$ 17	$ 69	$ 72
Distributions			(751)	(795)	(2,285)	(1,601)
Net income (loss)			739	(931)	3,136	(1,005)
Other comprehensive income			$ 1,646	$ 229	$ 3,608	$ 710
Ending balance (in shares)	21,422,000		21,422,000	22,611,000	21,422,000	22,611,000
Ending balance	$ 470		$ 470	$ (3,172)	$ 470	$ (3,172)
Limited Partners | Series 60 Operating Partnership Units Limited Partners
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in shares)		5,738,000	5,738,000	6,112,000	5,884,000	6,424,000
Beginning balance		$ (637)	$ (637)	$ (789)	$ (1,395)	$ (721)
Conversion of operating partnership units to ESRT Partner's Capital (in shares)			(60,000)	(93,000)	(206,000)	(405,000)
Conversion of operating partnership units to ESRT Partner's Capital			$ (5)	$ 10	$ 28	$ 50
Distributions			(199)	(211)	(604)	(426)
Net income (loss)			192	(248)	813	(267)
Other comprehensive income			$ 426	$ 62	$ 935	$ 188
Ending balance (in shares)	5,678,000		5,678,000	6,019,000	5,678,000	6,019,000
Ending balance	$ (223)		$ (223)	$ (1,176)	$ (223)	$ (1,176)
Limited Partners | Series 250 Operating Partnership Units Limited Partners
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in shares)		2,862,000	2,862,000	3,045,000	2,970,000	3,255,000
Beginning balance		$ (277)	$ (277)	$ (383)	$ (692)	$ (356)
Conversion of operating partnership units to ESRT Partner's Capital (in shares)			(38,000)	(18,000)	(146,000)	(228,000)
Conversion of operating partnership units to ESRT Partner's Capital			$ (3)	$ 2	$ 22	$ 30
Distributions			100	(106)	(303)	(214)
Net income (loss)			100	(123)	426	(133)
Other comprehensive income			$ 223	$ 31	$ 490	$ 94
Ending balance (in shares)	2,824,000		2,824,000	3,027,000	2,824,000	3,027,000
Ending balance	$ (57)		$ (57)	$ (579)	$ (57)	$ (579)
Private Perpetual Preferred Units
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance (in shares)		6,224,000	6,224,000	6,224,000	6,224,000	6,224,000
Beginning balance		$ 29,940	$ 29,940	$ 29,940	$ 29,940	$ 29,940
Distributions			(1,050)	(1,050)	(3,151)	(3,151)
Net income (loss)			$ 1,050	$ 1,050	$ 3,151	$ 3,151
Ending balance (in shares)	6,224,000		6,224,000	6,224,000	6,224,000	6,224,000
Ending balance	$ 29,940		$ 29,940	$ 29,940	$ 29,940	$ 29,940
Non-controlling Interest in Other Partnerships
Increase (Decrease) in Partners' Capital [Roll Forward]
Beginning balance		$ 14,881	14,881	0	13,252	0
Contributions from consolidated joint ventures			0		224
Net income (loss)			(49)		(271)
Other comprehensive income			670		2,297
Ending balance	$ 15,502		$ 15,502	$ 0	$ 15,502	$ 0

Condensed Consolidated Statem_4

Condensed Consolidated Statements of Cash Flows - USD ($) $ in Thousands	9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021
Cash Flows From Operating Activities
Net income (loss)	$ 41,592	$ (8,963)
Adjustments to reconcile net income (loss) to net cash provided by operating activities:
Depreciation and amortization	172,394	155,339
Gain on disposition of property	(27,170)	0
Amortization of non-cash items within interest expense	7,514	7,978
Amortization of acquired above- and below-market leases, net	(4,136)	(5,615)
Amortization of acquired below-market ground leases	5,873	5,873
Straight-lining of rental revenue	(18,533)	(13,197)
Equity based compensation	15,599	15,416
Loss on early extinguishment of debt	0	214
Increase (decrease) in cash flows due to changes in operating assets and liabilities:
Security deposits	(1,198)	(4,366)
Tenant and other receivables	(11,707)	(123)
Deferred leasing costs	(31,983)	(12,324)
Prepaid expenses and other assets	23,630	18,660
Accounts payable and accrued expenses	2,511	(1,285)
Deferred revenue and other liabilities	(401)	9,420
Net cash provided by operating activities	173,985	167,027
Cash Flows From Investing Activities
Development costs	(31)	(41)
Additions to building and improvements	(89,085)	(70,719)
Net cash used in investing activities	(89,116)	(70,760)
Cash Flows From Financing Activities
Repayment of mortgage notes payable	(5,163)	(3,053)
Deferred financing costs	0	(7,559)
Contributions from consolidated joint ventures	224	0
Repurchases of common units	(82,545)	(10,043)
Distributions	(32,208)	(22,584)
Net cash used in financing activities	(119,692)	(43,239)
Net increase (decrease) in cash and cash equivalents and restricted cash	(34,823)	53,028
Cash and cash equivalents and restricted cash—beginning of period	474,638	567,939
Cash and cash equivalents and restricted cash—end of period	439,815	620,967
Reconciliation of Cash and Cash Equivalents and Restricted Cash:
Cash and cash equivalents at beginning of period	423,695	526,714
Restricted cash at beginning of period	50,943	41,225
Cash and cash equivalents at end of period	387,248	582,188
Restricted cash at end of period	52,567	38,779
Cash and cash equivalents and restricted cash	439,815	620,967
Supplemental disclosures of cash flow information:
Cash paid for interest	67,673	58,208
Cash paid for income taxes	188	472
Non-cash investing and financing activities:
Building and improvements included in accounts payable and accrued expenses	55,320	53,956
Write-off of fully depreciated assets	55,585	10,798
Derivative instruments at fair values included in prepaid expenses and other assets	18,457	0
Derivative instruments at fair values included in accounts payable and accrued expenses	0	4,887
Conversion of operating partnership units to ESRT partner's capital	2,384	7,766
Disposal of land in connection with foreclosure	1,680	0
Extinguishment of debt in connection with property disposition	$ 30,000	$ 0

Description of Business and Org

Description of Business and Organization	9 Months Ended
	Sep. 30, 2022
Organization, Consolidation and Presentation of Financial Statements [Abstract]
Description of Business and Organization	Description of Business and Organization As used in these condensed consolidated financial statements, unless the context otherwise requires, “we,” “us,” "our," and the "company,” mean Empire State Realty OP, L.P. and its consolidated subsidiaries. Empire State Realty OP, L.P. (the "Operating Partnership") is the entity through which Empire State Realty Trust, Inc. (“ESRT”), a self-administered and self-managed real estate investment trust ("REIT"), conducts all of its business and owns (either directly or through subsidiaries) substantially all of its assets. We own and manage a well-positioned property portfolio of office, retail and multifamily assets in Manhattan and the greater New York metropolitan area. As the owner of the Empire State Building, the World’s Most Famous Building, ESRT also owns and operates its iconic, newly reimagined Observatory Experience. As of September 30, 2022, our total portfolio contained 9.9 million rentable square feet of office and retail space. We owned 13 office properties (including three long-term ground leasehold interests) encompassing approximately 9.2 million rentable square feet of office space. Nine of these properties are located in the midtown Manhattan market and aggregate approximately 7.6 million rentable square feet of office space, including the Empire State Building. Our Manhattan office properties also contain an aggregate of approximately 0.5 million rentable square feet of retail space on their ground floor and/or contiguous levels. Our remaining four office properties are located in Fairfield County, Connecticut and Westchester County, New York, encompassing in the aggregate approximately 1.6 million rentable square feet. The majority of square footage for these four properties is located in densely populated metropolitan communities with immediate access to mass transportation. Additionally, we have entitled land at the Stamford Transportation Center in Stamford, Connecticut, adjacent to one of our office properties, that will support the development of an approximately 0.4 million rentable square foot office building and garage. As of September 30, 2022, our portfolio included four standalone retail properties located in Manhattan and two standalone retail properties located in the city center of Westport, Connecticut, encompassing approximately 0.2 million rentable square feet in the aggregate. Additionally, at September 30, 2022, our portfolio included two multifamily properties totaling 625 units. We were organized as a Delaware limited partnership on November 28, 2011 and operations commenced upon completion of the initial public offering of ESRT’s Class A common stock and related formation transactions on October 7, 2013. ESRT, as the sole general partner in our company, has responsibility and discretion in the management and control of our company, and our limited partners, in such capacity, have no authority to transact business for, or participate in the management activities, of our company. As of September 30, 2022, ESRT owned approximately 59.3% of our operating partnership units.

Summary of Significant Accounti

Summary of Significant Accounting Policies	9 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Summary of Significant Accounting Policies	Summary of Significant Accounting Policies There have been no material changes to the summary of significant accounting policies included in the section entitled "Summary of Significant Accounting Policies" in our December 31, 2021 Annual Report on Form 10-K. Basis of Quarterly Presentation and Principles of Consolidation The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”), for interim financial information, and with the rules and regulations of the Securities and Exchange Commission (the "SEC"). Accordingly, certain information and footnote disclosures required by GAAP for complete financial statements have been condensed or omitted in accordance with such rules and regulations. In the opinion of management, all adjustments and eliminations (including intercompany balances and transactions), consisting of normal recurring adjustments, considered necessary for the fair presentation of the financial statements have been included. The results of operations for the periods presented are not necessarily indicative of the results that may be expected for the corresponding full years. These financial statements should be read in conjunction with the financial statements and accompanying notes included in the financial statements for the year ended December 31, 2021 contained in our Annual Report on Form 10-K. We do not consider our business to be subject to material seasonal fluctuations, except that our observatory business is subject to tourism seasonality. Prior to the outbreak of COVID-19, approximately 16.0% to 18.0% of our annual observatory revenue was realized in the first quarter, 26.0% to 28.0% was realized in the second quarter, 31.0% to 33.0% was realized in the third quarter and 23.0% to 25.0% was realized in the fourth quarter. We consolidate entities in which we have a controlling financial interest. In determining whether we have a controlling financial interest in a partially owned entity and the requirement to consolidate the accounts of that entity, we consider factors such as ownership interest, board representation, management representation, authority to make decisions, and contractual and substantive participating rights of the partners/members. For variable interest entities ("VIE"), we consolidate the entity if we are deemed to have a variable interest in the entity and through that interest we are deemed the primary beneficiary. The primary beneficiary of a VIE is the entity that has (i) the power to direct the activities that most significantly impact the entity's economic performance and (ii) the obligation to absorb losses of the VIE or the right to receive benefits from the VIE that could be significant to the VIE. The primary beneficiary is required to consolidate the VIE. We had no VIEs as of September 30, 2022 and December 31, 2021. We will assess the accounting treatment for each investment we may have in the future. This assessment will include a review of each entity’s organizational agreement to determine which party has what rights and whether those rights are protective or participating. For all VIEs, we will review such agreements in order to determine which party has the power to direct the activities that most significantly impact the entity’s economic performance and benefit. In situations where we or our partner could approve, among other things, the annual budget, or leases that cover more than a nominal amount of space relative to the total rentable space at each property, we would not consolidate the investment as we consider these to be substantive participation rights that result in shared power of the activities that would most significantly impact the performance and benefit of such joint venture investment. A non-controlling interest in a consolidated subsidiary is defined as the portion of the equity (net assets) in a subsidiary not attributable, directly or indirectly, to a parent. Non-controlling interests are required to be presented as a separate component of equity in the condensed consolidated balance sheets and in the condensed consolidated statements of operations by requiring earnings and other comprehensive income to be attributed to controlling and non-controlling interests. Accounting Estimates

Property Disposition

Property Disposition	9 Months Ended
	Sep. 30, 2022
Discontinued Operations and Disposal Groups [Abstract]
Property Disposition	Property Disposition During April 2022, we transferred 383 Main Avenue, Norwalk CT, which was encumbered by a $30.0 million mortgage, back to the lender in a consensual foreclosure and recognized a non-cash gain of $27.2 million, which is included in Gain on disposition of property in our condensed consolidated statements of operations. In December 2021, we recorded a $7.7 million impairment charge on the property as we had concluded the cost basis of the asset exceeded its fair value given our reduced holding period and new intent to transfer property ownership to the lender. Subsequent to September 30, 2022, we entered into agreements to sell 500 Mamaroneck Avenue in Harrison, NY and 10 Bank Street in White Plains, NY at a gross asset valuation of $95.0 million. These transactions are expected to close in the first quarter of 2023, subject to customary closing conditions.

Deferred Costs, Acquired Lease

Deferred Costs, Acquired Lease Intangibles and Goodwill	9 Months Ended
	Sep. 30, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Deferred Costs, Acquired Lease Intangibles and Goodwill	Deferred Costs, Acquired Lease Intangibles and Goodwill Deferred costs, net, consisted of the following as of September 30, 2022 and December 31, 2021 (amounts in thousands): September 30, 2022 December 31, 2021 Leasing costs $ 218,552 $ 211,189 Acquired in-place lease value and deferred leasing costs 158,286 166,491 Acquired above-market leases 28,123 33,289 404,961 410,969 Less: accumulated amortization (221,751) (215,764) Total deferred costs, net, excluding net deferred financing costs $ 183,210 $ 195,205 At September 30, 2022 and December 31, 2021, $5.5 million and $7.2 million, respectively, of net deferred financing costs associated with the unsecured revolving credit facility was included in deferred costs, net on the condensed consolidated balance sheets. Amortization expense related to deferred leasing costs and acquired deferred leasing costs was $5.6 million and $10.4 million for the three months ended September 30, 2022 and 2021, respectively, and $19.8 million and $22.1 million for the nine months ended September 30, 2022 and 2021, respectively. Amortization expense related to acquired lease intangibles was $2.2 million and $5.0 million for the three months ended September 30, 2022 and 2021, respectively, and $10.6 million and $8.3 million for the nine months ended September 30, 2022 and 2021, respectively. Amortizing acquired intangible assets and liabilities consisted of the following as of September 30, 2022 and December 31, 2021 (amounts in thousands): September 30, 2022 December 31, 2021 Acquired below-market ground leases $ 396,916 $ 396,916 Less: accumulated amortization (65,886) (60,012) Acquired below-market ground leases, net $ 331,030 $ 336,904 September 30, 2022 December 31, 2021 Acquired below-market leases $ (64,529) $ (65,403) Less: accumulated amortization 45,632 40,462 Acquired below-market leases, net $ (18,897) $ (24,941) Rental revenue related to the amortization of below-market leases, net of above-market leases, was $0.7 million and $4.2 million for the three months ended September 30, 2022 and 2021, respectively, and $4.1 million and $5.6 million for the nine months ended September 30, 2022 and 2021, respectively. As of September 30, 2022, we had goodwill of $491.5 million. Goodwill was allocated $227.5 million to the observatory reportable segment and $264.0 million to the real estate reportable segment. From the quarter ended June 30, 2020 through the quarter ended June 30, 2022, we bypassed the optional qualitative goodwill impairment assessment and proceeded directly to a quantitative assessment of the observatory reportable segment and engaged a third-party valuation consulting firm to perform the valuation process. This was done in response to the closure of the observatory on March 16, 2020, due to the COVID-19 pandemic, which was subsequently fully reopened on August 24, 2020. The quantitative analysis used a combination of the discounted cash flow method (a form of the income approach) utilizing Level 3 unobservable inputs and the guideline company method (a form of the market approach). Significant assumptions under the former included revenue and cost projections, weighted average cost of capital, long-term growth rate and income tax considerations while the latter included guideline company enterprise values, revenue multiples and control premium rates. Our methodology to review goodwill impairment, which included a significant amount of judgment and estimates, provided a reasonable basis to determine whether impairment had occurred. Each quantitative analysis performed concluded the fair value of the reporting unit exceeds its carrying value. For the quarter ended September 30, 2022, we performed an optional qualitative assessment and did not identify any events which occurred between our last quantitative assessment and the current reporting date which would indicate, on a more likely than not basis, that the goodwill allocated to the reporting unit was impaired. Many of the factors employed in determining whether or not goodwill is impaired are outside of our control, and it is reasonably likely that assumptions and estimates will change in future periods. We will continue to assess the impairment of the observatory reporting unit goodwill going forward.

Debt

Debt	9 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Debt	Debt Debt consisted of the following as of September 30, 2022 and December 31, 2021 (amounts in thousands): Principal Balance As of September 30, 2022 September 30, 2022 December 31, 2021 Stated Effective (1) Maturity (2) Mortgage debt collateralized by: Fixed rate mortgage debt Metro Center $ 83,213 $ 85,032 3.59 % 3.67 % 11/5/2024 10 Union Square 50,000 50,000 3.70 % 3.97 % 4/1/2026 1542 Third Avenue 30,000 30,000 4.29 % 4.53 % 5/1/2027 First Stamford Place (3) 179,549 180,000 4.28 % 4.73 % 7/1/2027 1010 Third Avenue and 77 West 55th Street 36,044 36,670 4.01 % 4.21 % 1/5/2028 250 West 57th Street 180,000 180,000 2.83 % 3.21 % 12/1/2030 10 Bank Street 30,364 31,091 4.23 % 4.37 % 6/1/2032 383 Main Avenue (4) — 30,000 — % — % — 1333 Broadway 160,000 160,000 4.21 % 4.29 % 2/5/2033 345 East 94th Street - Series A 43,600 43,600 70.0% of LIBOR plus 0.95% 3.56 % 11/1/2030 345 East 94th Street - Series B 8,021 8,650 LIBOR plus 2.24% 3.56 % 11/1/2030 561 10th Avenue - Series A 114,500 114,500 70.0% of LIBOR plus 1.07% 3.85 % 11/1/2033 561 10th Avenue - Series B 17,797 19,250 LIBOR plus 2.45% 3.85 % 11/1/2033 Total mortgage debt 933,088 968,793 Senior unsecured notes: (5) Series A 100,000 100,000 3.93 % 3.96 % 3/27/2025 Series B 125,000 125,000 4.09 % 4.12 % 3/27/2027 Series C 125,000 125,000 4.18 % 4.21 % 3/27/2030 Series D 115,000 115,000 4.08 % 4.11 % 1/22/2028 Series E 160,000 160,000 4.26 % 4.27 % 3/22/2030 Series F 175,000 175,000 4.44 % 4.45 % 3/22/2033 Series G 100,000 100,000 3.61 % 4.89 % 3/17/2032 Series H 75,000 75,000 3.73 % 5.00 % 3/17/2035 Unsecured term loan facility (5) (6) 215,000 215,000 SOFR plus 1.20% 4.22 % 3/19/2025 Unsecured revolving credit facility (5) (6) — — SOFR plus 1.30% — 3/31/2025 Unsecured term loan facility (5) (6) 175,000 175,000 SOFR plus 1.50% 4.51 % 12/31/2026 Total principal 2,298,088 2,333,793 Deferred financing costs, net (12,694) (14,881) Unamortized debt discount (7,940) (8,547) Total $ 2,277,454 $ 2,310,365 ______________ (1) The effective rate is the yield as of September 30, 2022 and includes the stated interest rate, deferred financing cost amortization and interest associated with variable to fixed interest rate swap agreements. (2) Pre-payment is generally allowed for each loan upon payment of a customary pre-payment penalty. (3) Represents a $164 million mortgage loan bearing interest at 4.09% and a $15.5 million loan bearing interest at 6.25%. (4) Ownership of 383 Main Avenue, Norwalk CT was transferred to the lender during April 2022. (5) At September 30, 2022, we were in compliance with all debt covenants. (6) As of August 29, 2022, the benchmark index interest rate was converted from LIBOR to SOFR, plus a benchmark adjustment of 10.0 basis points. Principal Payments Aggregate required principal payments at September 30, 2022 are as follows (amounts in thousands): Year Amortization Maturities Total 2022 $ 2,160 $ — $ 2,160 2023 9,632 — 9,632 2024 9,903 77,675 87,578 2025 7,979 315,000 322,979 2026 8,491 225,000 233,491 Thereafter 35,966 1,606,282 1,642,248 Total $ 74,131 $ 2,223,957 $ 2,298,088 Deferred Financing Costs Deferred financing costs, net, consisted of the following at September 30, 2022 and December 31, 2021 (amounts in thousands): September 30, 2022 December 31, 2021 Financing costs $ 44,065 $ 44,637 Less: accumulated amortization (25,875) (22,525) Total deferred financing costs, net $ 18,190 $ 22,112 Amortization expense related to deferred financing costs was $1.2 million and $1.1 million for the three months ended September 30, 2022 and 2021, respectively, and $3.8 million and $3.4 million for the nine months ended September 30, 2022 and 2021, respectively. Unsecured Revolving Credit and Term Loan Facilities On August 29, 2022, we entered into a third amendment to our amended and restated credit agreement dated August 29, 2017 with Bank of America, N.A., as administrative agent and the other lenders party thereto, which governs our senior unsecured revolving credit facility and term loan facility (collectively, the “BofA Credit Facility”). The BofA Credit Facility is in the initial maximum principal amount of up to $1.065 billion, which consists of an $850.0 million revolving credit facility that matures on March 31, 2025, and a $215.0 million term loan facility that matures on March 19, 2025. As of September 30, 2022 , we had no borrowings under the revolving credit facility and $215.0 million under the term loan facility. On August 29, 2022, we entered into a second amendment to our credit agreement dated March 19, 2020 with Wells Fargo Bank, National Association, as administrative agent, and the other lenders party thereto, which governs a senior unsecured term loan facility (the “Wells Term Loan Facility”). The Wells Term Loan Facility is in the original principal amount of $175.0 million and matures on December 31, 2026. We may request the Wells Term Loan Facility be increased through one or more increases or the addition of new pari passu term loan tranches, for a maximum aggregate principal amount not to exceed $225 million. As of September 30, 2022 , our borrowings amounted to $175.0 million under the Wells Term Loan Facility. The terms of both the BofA Credit Facility and the Wells Term Loan Facility include customary covenants, including limitations on liens, investment, distributions, debt, fundamental changes, and transactions with affiliates and require certain customary financial reports. Both facilities also require compliance with financial ratios including a maximum leverage ratio, a maximum secured leverage ratio, a minimum fixed charge coverage ratio, a minimum unencumbered interest coverage ratio, and a maximum unsecured leverage ratio. The agreements governing both facilities also contain customary events of default (subject in certain cases to specified cure periods), including but not limited to non-payment, breach of covenants, representations or warranties, cross defaults, bankruptcy or other insolvency events, judgments, ERISA events, invalidity of loan documents, loss of real estate investment trust qualification, and occurrence of a change of control. As of September 30, 2022, we were in compliance with these covenants. Senior Unsecured Notes The terms of the senior unsecured notes include customary covenants, including limitations on liens, investment, distributions, debt, fundamental changes, and transactions with affiliates and require certain customary financial reports. It also requires compliance with financial ratios including a maximum leverage ratio, a maximum secured leverage ratio, a minimum fixed charge coverage ratio, a minimum unencumbered interest coverage ratio, and a maximum unsecured leverage ratio. The agreements also contain customary events of default (subject in certain cases to specified cure periods), including but not limited to non-payment, breach of covenants, representations or warranties, cross defaults, bankruptcy or other insolvency events, judgments, ERISA events, the occurrence of certain change of control transactions and loss of real estate investment trust qualification. As of September 30, 2022, we were in compliance with these covenants.

Accounts Payable and Accrued Ex

Accounts Payable and Accrued Expenses	9 Months Ended
	Sep. 30, 2022
Payables and Accruals [Abstract]
Accounts Payable and Accrued Expenses	Accounts Payable and Accrued Expenses Accounts payable and accrued expenses consisted of the following as of September 30, 2022 and December 31, 2021 (amounts in thousands): September 30, 2022 December 31, 2021 Accrued capital expenditures $ 55,320 $ 49,247 Accounts payable and accrued expenses 36,353 41,664 Interest rate swaps liability — 25,308 Accrued interest payable 3,294 3,460 Due (from) to affiliated companies (531) 1,131 Total accounts payable and accrued expenses $ 94,436 $ 120,810

Financial Instruments and Fair

Financial Instruments and Fair Values	9 Months Ended
	Sep. 30, 2022
Fair Value Disclosures [Abstract]
Financial Instruments and Fair Values	Financial Instruments and Fair Values Derivative Financial Instruments We use derivative financial instruments primarily to manage interest rate risk and such derivatives are not considered speculative. These derivative instruments are typically in the form of interest rate swap and forward agreements, and the primary objective is to minimize interest rate risks associated with investing and financing activities. The counterparties of these arrangements are major financial institutions with which we may also have other financial relationships. We are exposed to credit risk in the event of non-performance by these counterparties; however, we currently do not anticipate that any of the counterparties will fail to meet its obligations. In May 2022, we entered into forward interest rate swaps with an aggregate notional value of $390.0 million that became effective in August 2022 and fixed the interest rate on 100% of our term loans. This replaced the $265.0 million swap which had fixed the interest rate on a portion of our outstanding term loans balance. We have agreements with our derivative counterparties that contain a provision where if we either default or are capable of being declared in default on any of our indebtedness, then we could also be declared in default on our derivative obligations. As of September 30, 2022, we did not have any derivatives in a net liability position. As of September 30, 2022 and December 31, 2021, we had interest rate swaps and caps with an aggregate notional value of $576.3 million and $451.3 million, respectively. The notional value does not represent exposure to credit, interest rate or market risks. As of September 30, 2022, the fair value of our interest rate swaps amounted to $18.5 million, which is included in prepaid assets and other expenses on the condensed consolidated balance sheet. As of December 31, 2021, the fair value of our interest rate swaps amounted to $(25.3) million, which is included in accounts payable and accrued expenses on the condensed consolidated balance sheet. These interest rate swaps have been designated as cash flow hedges and hedge the variability in future cash flows associated with our existing variable-rate term loan facilities. Interest rate caps not designated as hedges are not speculative and are used to manage our exposure to interest rate movements, but do not meet the strict hedge accounting requirements. As of September 30, 2022 and 2021, our cash flow hedges are deemed highly effective and a net unrealized gain of $21.0 million and $2.8 million for the three months ended September 30, 2022 and 2021, respectively, and a net unrealized gain of $46.8 million and $8.5 million for the nine months ended September 30, 2022 and 2021, respectively, relating to both active and terminated hedges of interest rate risk, are reflected in the condensed consolidated statements of comprehensive income (loss). Amounts reported in accumulated other comprehensive loss related to derivatives will be reclassified to interest expense as interest payments are made on the debt. We estimate that $3.3 million net loss of the current balance held in accumulated other comprehensive income (loss) will be reclassified into interest expense within the next 12 months. The table below summarizes the terms of agreements and the fair values of our derivative financial instruments as of September 30, 2022 and December 31, 2021 (amounts in thousands): September 30, 2022 December 31, 2021 Derivative Notional Amount Receive Rate Pay Rate Effective Date Expiration Date Asset Liability Asset Liability Interest rate swap $ 265,000 1 Month LIBOR 2.1485% August 31, 2017 August 24, 2022 $ — $ — $ — $ (3,184) Interest rate swap 36,820 70% of 1 Month LIBOR 2.5000% December 1, 2021 November 1, 2030 324 — — (4,527) Interest rate swap 103,790 70% of 1 Month LIBOR 2.5000% December 1, 2021 November 1, 2033 324 — — (15,945) Interest rate swap 10,710 70% of 1 Month LIBOR 1.7570% December 1, 2021 November 1, 2033 657 — (754) Interest rate swap 19,008 1 Month LIBOR 2.2540% December 1, 2021 November 1, 2030 1,143 — — (898) Interest rate cap 6,780 70% of 1 Month LIBOR 4.5000% December 1, 2021 October 1, 2024 16 — 5 — Interest rate cap 9,188 1 Month LIBOR 5.5000% December 1, 2021 October 1, 2024 43 — 8 — Interest rate swap 175,000 SOFR Compound 2.5620% August 31, 2022 December 31, 2026 8,713 — — — Interest rate swap 107,500 SOFR Compound 2.6260% August 19, 2022 March 19, 2025 3,649 — — — Interest rate swap 107,500 SOFR OIS Compound 2.6280% August 19, 2022 March 19, 2025 3,646 — — — $ 18,515 $ — $ 13 $ (25,308) The table below shows the effect of our derivative financial instruments designated as cash flow hedges on accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2022 and 2021 (amounts in thousands): Three Months Ended Nine Months Ended Effects of Cash Flow Hedges September 30, 2022 September 30, 2021 September 30, 2022 September 30, 2021 Amount of gain (loss) recognized in other comprehensive income (loss) $ 19,588 $ (103) $ 39,407 $ (139) Amount of loss reclassified from accumulated other comprehensive income ( loss) into interest expense (1,392) (2,920) (7,428) (8,687) The table below shows the effect of our derivative financial instruments designated as cash flow hedges on the condensed consolidated statements of operations for the three and nine months ended September 30, 2022 and 2021 (amounts in thousands): Three Months Ended Nine Months Ended Effects of Cash Flow Hedges September 30, 2022 September 30, 2021 September 30, 2022 September 30, 2021 Total interest expense presented in the condensed consolidated statements of operations in which the effects of cash flow hedges are recorded $ (25,516) $ (23,577) $ (75,572) $ (70,553) Amount of loss reclassified from accumulated other comprehensive income (loss) into interest expense (1,392) (2,920) (7,428) (8,687) Fair Valuation The estimated fair values at September 30, 2022 and December 31, 2021 were determined by management, using available market information and appropriate valuation methodologies. Considerable judgment is necessary to interpret market data and develop estimated fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts we could realize on disposition of the financial instruments. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts. The fair value of derivative instruments is determined using widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each derivative. Although the majority of the inputs used to value our derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with our derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by ourselves and our counterparties. The impact of such credit valuation adjustments, determined based on the fair value of each individual contract, was not significant to the overall valuation. As a result, all our derivatives were classified as Level 2 of the fair value hierarchy. The fair values of our mortgage notes payable, senior unsecured notes - Series A, B, C, D, E, F, G and H - unsecured term loan facilities and unsecured revolving credit facility which are determined using Level 3 inputs are estimated by discounting the future cash flows using current interest rates at which similar borrowings could be made by us. The following tables summarize the carrying and estimated fair values of our financial instruments as of September 30, 2022 and December 31, 2021 (amounts in thousands): September 30, 2022 Estimated Fair Value Carrying Total Level 1 Level 2 Level 3 Interest rate swaps included in prepaid expenses and other assets $ 18,457 $ 18,457 $ — $ 18,457 $ — Mortgage notes payable 915,202 809,720 — — 809,720 Senior unsecured notes - Series A, B, C, D, E, F, G and H 973,607 862,768 — — 862,768 Unsecured term loan facilities 388,645 390,000 — — 390,000 December 31, 2021 Estimated Fair Value Carrying Total Level 1 Level 2 Level 3 Interest rate swap included in accounts payable and accrued expenses $ 25,308 $ 25,308 $ — $ 25,308 $ — Mortgage notes payable 948,769 960,933 — — 960,933 Senior unsecured notes - Series A, B, C, D, E, F, G and H 973,373 994,389 — — 994,389 Unsecured term loan facilities 388,223 390,000 — — 390,000

Leases

Leases	9 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Leases	Leases Lessor We lease various spaces to tenants over terms ranging from one Rental revenue includes fixed and variable payments. Fixed payments primarily relate to base rent and variable payments primarily relate to tenant expense reimbursements for certain property operating costs. The components of rental revenue for the three and nine months ended September 30, 2022 and 2021 are as follows (amounts in thousands): Three Months Ended Nine Months Ended Rental revenue September 30, 2022 September 30, 2021 September 30, 2022 September 30, 2021 Fixed payments $ 131,800 $ 124,764 $ 399,995 $ 374,968 Variable payments 16,490 14,794 45,148 45,618 Total rental revenue $ 148,290 $ 139,558 $ 445,143 $ 420,586 As of September 30, 2022, we were entitled to the following future contractual minimum lease payments (excluding operating expense reimbursements) on non-cancellable operating leases to be received which expire on various dates through 2039 (amounts in thousands): Remainder of 2022 $ 120,126 2023 487,764 2024 480,189 2025 448,981 2026 407,826 Thereafter 1,934,341 $ 3,879,227 The above future minimum lease payments exclude tenant recoveries and the net accretion of above and below-market lease intangibles. Some leases are subject to termination options generally upon payment of a termination fee. The preceding table is prepared assuming such options are not exercised. Lessee We determine if an arrangement is a lease at inception. Our operating lease agreements relate to three ground lease assets and are reflected in right-of-use assets of $28.7 million and lease liabilities of $28.7 million in our consolidated balance sheets as of September 30, 2022. Right-of-use assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Right-of-use assets and liabilities are recognized at the commencement date based on the present value of lease payments over the lease term. Variable lease payments are excluded from the right-of-use assets and lease liabilities and are recognized in the period in which the obligation for those payments is incurred. The ground leases are due to expire between the years 2050 and 2077, inclusive of extension options, and have no variable payments or residual value guarantees. As our leases do not provide an implicit rate, we determined our incremental borrowing rate based on information available at the date of adoption of Accounting Standards Update No. 2016-02, Leases (Topic 842), in determining the present value of lease payments. The weighted average incremental borrowing rate used to calculate the right-of-use assets and lease liabilities as of September 30, 2022 was 4.5%. Rent expense for lease payments related to our operating leases is recognized on a straight-line basis over the non-cancellable term of the leases. The weighted average remaining lease term as of September 30, 2022 was 47.7 years. As of September 30, 2022, the following table summarizes our future minimum lease payments discounted by our incremental borrowing rates to calculate the lease liabilities of our leases (amounts in thousands): Remainder of 2022 $ 380 2023 1,518 2024 1,518 2025 1,518 2026 1,518 Thereafter 63,744 Total undiscounted cash flows 70,196 Present value discount (41,471) Ground lease liabilities $ 28,725
Leases	Leases Lessor We lease various spaces to tenants over terms ranging from one Rental revenue includes fixed and variable payments. Fixed payments primarily relate to base rent and variable payments primarily relate to tenant expense reimbursements for certain property operating costs. The components of rental revenue for the three and nine months ended September 30, 2022 and 2021 are as follows (amounts in thousands): Three Months Ended Nine Months Ended Rental revenue September 30, 2022 September 30, 2021 September 30, 2022 September 30, 2021 Fixed payments $ 131,800 $ 124,764 $ 399,995 $ 374,968 Variable payments 16,490 14,794 45,148 45,618 Total rental revenue $ 148,290 $ 139,558 $ 445,143 $ 420,586 As of September 30, 2022, we were entitled to the following future contractual minimum lease payments (excluding operating expense reimbursements) on non-cancellable operating leases to be received which expire on various dates through 2039 (amounts in thousands): Remainder of 2022 $ 120,126 2023 487,764 2024 480,189 2025 448,981 2026 407,826 Thereafter 1,934,341 $ 3,879,227 The above future minimum lease payments exclude tenant recoveries and the net accretion of above and below-market lease intangibles. Some leases are subject to termination options generally upon payment of a termination fee. The preceding table is prepared assuming such options are not exercised. Lessee We determine if an arrangement is a lease at inception. Our operating lease agreements relate to three ground lease assets and are reflected in right-of-use assets of $28.7 million and lease liabilities of $28.7 million in our consolidated balance sheets as of September 30, 2022. Right-of-use assets represent our right to use an underlying asset for the lease term and lease liabilities represent our obligation to make lease payments arising from the lease. Right-of-use assets and liabilities are recognized at the commencement date based on the present value of lease payments over the lease term. Variable lease payments are excluded from the right-of-use assets and lease liabilities and are recognized in the period in which the obligation for those payments is incurred. The ground leases are due to expire between the years 2050 and 2077, inclusive of extension options, and have no variable payments or residual value guarantees. As our leases do not provide an implicit rate, we determined our incremental borrowing rate based on information available at the date of adoption of Accounting Standards Update No. 2016-02, Leases (Topic 842), in determining the present value of lease payments. The weighted average incremental borrowing rate used to calculate the right-of-use assets and lease liabilities as of September 30, 2022 was 4.5%. Rent expense for lease payments related to our operating leases is recognized on a straight-line basis over the non-cancellable term of the leases. The weighted average remaining lease term as of September 30, 2022 was 47.7 years. As of September 30, 2022, the following table summarizes our future minimum lease payments discounted by our incremental borrowing rates to calculate the lease liabilities of our leases (amounts in thousands): Remainder of 2022 $ 380 2023 1,518 2024 1,518 2025 1,518 2026 1,518 Thereafter 63,744 Total undiscounted cash flows 70,196 Present value discount (41,471) Ground lease liabilities $ 28,725

Commitments and Contingencies

Commitments and Contingencies	9 Months Ended
	Sep. 30, 2022
Commitments and Contingencies Disclosure [Abstract]
Commitments and Contingencies	Commitments and Contingencies Legal Proceedings Except as described below, as of September 30, 2022, we were not involved in any material litigation, nor, to our knowledge, was any material litigation threatened against us or our properties, other than routine litigation arising in the ordinary course of business such as disputes with tenants. We believe that the costs and related liabilities, if any, which may result from such actions will not materially affect our condensed consolidated financial position, operating results or liquidity. As previously disclosed, in October 2014, 12 former investors (the "Claimants") in Empire State Building Associates L.L.C. (“ESBA”), which prior to the initial public offering of our company (the "Offering") owned the fee title to the Empire State Building, filed an arbitration with the American Arbitration Association against Peter L. Malkin, Anthony E. Malkin, Thomas N. Keltner, Jr., and our subsidiary ESRT MH Holdings LLC, the former supervisor of ESBA (the "Respondents"). The statement of claim (also filed later in federal court in New York for the expressed purpose of tolling the statute of limitations) alleges breach of fiduciary duty and related claims in connection with the Offering and formation transactions and seeks monetary damages and declaratory relief. Claimants had opted out of a prior class action bringing similar claims that was settled with court approval. Respondents filed an answer and counterclaims. In March 2015, the federal court action was stayed on consent of all parties pending the arbitration. Arbitration hearings started in May 2016 and concluded in August 2018. On August 26, 2020, the arbitration panel issued an award that denied all Claimants’ claims with one exception, on which it awarded Claimants approximately $1.2 million, inclusive of seven years of interest through October 2, 2020. This amount was recorded as an IPO litigation expense in the consolidated statement of operations for the year ended December 31, 2020. Respondents believe that such award in favor of the Claimants is entirely without merit and sought to vacate that portion of the award. On September 27, 2021, the court denied Respondents' motion to vacate and entered judgement in the aforementioned amount, inclusive of accumulated interest. Respondents have appealed that ruling. On May 10, 2022, Respondents moved to dismiss the appeal and judgment on the grounds that a recent decision of the United States Supreme Court held that the federal courts have no subject matter jurisdiction over the case. Claimants opposed the motion, which is pending. In addition, certain of the Claimants in the federal court action sought to pursue claims in that case against Respondents. Respondents believe that any such claims are meritless. The magistrate judge assigned to the action has issued a Report and Recommendation rejecting Claimants’ claims; the district judge will decide whether to adopt the Report and Recommendation. Pursuant to indemnification agreements which were made with our directors, executive officers and chairman emeritus as part of our formation transactions, Anthony E. Malkin, Peter L. Malkin and Thomas N. Keltner, Jr. have defense and indemnity rights from us with respect to this arbitration. Unfunded Capital Expenditures At September 30, 2022, we estimate that we will incur approximately $117.9 million of capital expenditures (including tenant improvements and leasing commissions) on our properties pursuant to existing lease agreements. We expect to fund these capital expenditures with operating cash flow, additional property level mortgage financings, our unsecured credit facility, cash on hand and other borrowings. Future property acquisitions may require substantial capital investments for refurbishment and leasing costs. We expect that these financing requirements will be met in a similar fashion. Concentration of Credit Risk Financial instruments that subject us to credit risk consist primarily of cash and cash equivalents, restricted cash, short-term investments, tenant and other receivables and deferred rent receivables. At September 30, 2022, we held on deposit at various major financial institutions cash and cash equivalents and restricted cash balances in excess of amounts insured by the Federal Deposit Insurance Corporation. Asset Retirement Obligations We are required to accrue costs that we are legally obligated to incur on retirement of our properties which result from acquisition, construction, development and/or normal operation of such properties. Retirement includes sale, abandonment or disposal of a property. Under that standard, a conditional asset retirement obligation represents a legal obligation to perform an asset retirement activity in which the timing and/or method of settlement is conditional on a future event that may or may not be within a company’s control and a liability for a conditional asset retirement obligation must be recorded if the fair value of the obligation can be reasonably estimated. Environmental site assessments and investigations have identified asbestos or asbestos-containing building materials in certain of our properties. As of September 30, 2022, management has no plans to remove or alter these properties in a manner that would trigger federal and other applicable regulations for asbestos removal, and accordingly, the obligations to remove the asbestos or asbestos-containing building materials from these properties have indeterminable settlement dates. As such, we are unable to reasonably estimate the fair value of the associated conditional asset retirement obligation. However, ongoing asbestos abatement, maintenance programs and other required documentation are carried out as required and related costs are expensed as incurred. Other Environmental Matters Certain of our properties have been inspected for soil contamination due to pollutants, which may have occurred prior to our ownership of these properties or subsequently in connection with its development and/or its use. Required remediation to such properties has been completed, and as of September 30, 2022, management believes that there are no obligations related to environmental remediation other than maintaining the affected sites in conformity with the relevant authority’s mandates and filing the required documents. All such maintenance costs are expensed as incurred. We expect that resolution of the environmental matters relating to the above will not have a material impact on our business, assets, consolidated financial condition, results of operations or liquidity. However, we cannot be certain that we have identified all environmental liabilities at our properties, that all necessary remediation actions have been or will be undertaken at our properties or that we will be indemnified, in full or at all, in the event that such environmental liabilities arise. Insurance Coverage

Capital

Capital	9 Months Ended
	Sep. 30, 2022
Equity [Abstract]
Capital	Capital As of September 30, 2022, there were 160,576,042 shares of Class A common stock 993,332 shares of Class B common stock and 110,959,627 operating partnership units outstanding, of which 161,569,374, or 59.3%, were owned by ESRT and 110,959,627, or 40.7%, were owned by other partners, including ESRT directors, members of senior management and other employees. On May 16, 2019, the Empire State Realty Trust, Inc. Empire State Realty OP, L.P. 2019 Equity Incentive Plan (“2019 Plan”) was approved by our shareholders. The 2019 Plan provides for grants to directors, employees and consultants of ESRT and the Operating Partnership, including options, restricted stock, restricted stock units, stock appreciation rights, performance awards, dividend equivalents and other equity-based awards. An aggregate of approximately 11.0 million shares of ESRT common stock is authorized for issuance under awards granted pursuant to the 2019 Plan. We will not issue any new equity awards under the First Amended and Restated Empire State Realty Trust, Inc. and Empire State Realty OP, L.P. 2013 Equity Incentive Plan ("2013 Plan", and collectively with the 2019 Plan, "the Plans"). The shares of ESRT Class A common stock underlying any awards under the 2019 Plan and the 2013 Plan that are forfeited, canceled or otherwise terminated, other than by exercise, will be added back to the shares of ESRT Class A common stock available for issuance under the 2019 Plan. Shares tendered or held back upon exercise of a stock option or settlement of an award under the 2019 Plan or the 2013 Plan to cover the exercise price or tax withholding and shares subject to a stock appreciation right that are not issued in connection with the stock settlement of the stock appreciation right upon exercise thereof, will not be added back to the shares of ESRT Class A common stock available for issuance under the 2019 Plan. In addition, shares of ESRT Class A common stock repurchased on the open market will not be added back to the shares of ESRT Class A common stock available for issuance under the 2019 Plan. Long-term incentive plan ("LTIP") units are a special class of partnership interests. Each LTIP unit awarded will be deemed equivalent to an award of one share of ESRT stock under the Plans, reducing the availability for other equity awards on a one-for-one basis. The vesting period for LTIP units, if any, will be determined at the time of issuance. Under the terms of the LTIP units, we will revalue for tax purposes its assets upon the occurrence of certain specified capital events, and any increase in valuation from the time of one such event to the next such event will be allocated first to the holders of LTIP units to equalize the capital accounts of such holders with the capital accounts of unitholders. Subject to any agreed upon exceptions, once vested and having achieved parity with unitholders, LTIP units are convertible into Series PR operating partnership units on a one-for-one basis. LTIP units subject to time-based vesting, whether vested or not, receive per unit distributions as operating partnership units, which equal per share dividends (both regular and special) on our common stock. Market and performance-based LTIPs receive 10% of such distributions currently, unless and until such LTIP units are earned based on performance, at which time they will receive the accrued and unpaid 90% and will commence receiving 100% of such distributions thereafter. Stock and Publicly Traded Operating Partnership Unit Repurchase Program ESRT's Board of Directors authorized the repurchase of up to $500 million of ESRT Class A common stock and the Operating Partnership’s Series ES, Series 250 and Series 60 operating partnership units from January 1, 2022 through December 31, 2023. Under the program, ESRT may purchase ESRT Class A common stock and we may purchase our Series ES, Series 250 and Series 60 operating partnership units in accordance with applicable securities laws from time to time in the open market or in privately negotiated transactions. The timing, manner, price and amount of any repurchases will be determined by ESRT and us and will be subject to stock price, availability, trading volume, general market conditions, and applicable securities laws. The authorization does not obligate ESRT or us to acquire any particular amount of securities, and the program may be suspended or discontinued at ESRT and our discretion without prior notice. The following table summarizes ESRT's purchases of equity securities in each of the three months ended September 30, 2022: Period Total Number of Shares Purchased Weighted Average Price Paid per Share Maximum Approximate Dollar Value Available for Future Purchase (in thousands) July 2022 184,045 $ 6.92 $ 434,286 August 2022 621,314 $ 7.32 $ 429,736 September 2022 1,761,561 $ 6.97 $ 417,455 Private Perpetual Preferred Units As of September 30, 2022, there were 4,664,038 Series 2019 Preferred Units ("Series 2019 Preferred Units") and 1,560,360 Series 2014 Private Perpetual Preferred Units ("Series 2014 Preferred Units") outstanding. The Series 2019 Preferred Units have a liquidation preference of $13.52 per unit and are entitled to receive cumulative preferential annual cash distributions of $0.70 per unit payable in arrears on a quarterly basis. The Series 2014 Preferred Units which have a liquidation preference of $16.62 per unit and are entitled to receive cumulative preferential annual cash distributions of $0.60 per unit payable in arrears on a quarterly basis. Both series are not redeemable at the option of the holders and are redeemable at our option only in the case of specific defined events. Distributions Total distributions paid to OP unitholders were $9.6 million and $29.1 million for the three and nine months ended September 30, 2022, respectively, and $10.0 million and $19.4 million for the three and nine months ended September 30, 2021, respectively. Total distributions paid to preferred unitholders were $1.1 million and $3.2 million for the three and nine months ended September 30, 2022, respectively, and $1.1 million and $3.2 million for the three and nine months ended September 30, 2021, respectively. Incentive and Share-Based Compensation The Plans provide for grants to directors, employees and consultants consisting of stock options, restricted stock, dividend equivalents, stock payments, performance shares, LTIP units, stock appreciation rights and other incentive awards. An aggregate of 11.0 million shares of ESRT common stock is authorized for issuance under awards granted pursuant to the 2019 Plan, and as of September 30, 2022, 5.9 million shares of ESRT common stock remain available for future issuance. Share-based compensation for time-based equity awards is measured at the fair value of the award on the date of grant and recognized as an expense on a straight-line basis over the shorter of (i) the stated vesting period, which is generally three four three For the market-based LTIP units, the fair value of the awards was estimated using a Monte Carlo Simulation model and discounted for the restriction period during which the LTIP units cannot be redeemed or transferred and the uncertainty regarding if, and when, the book capital account of the LTIP units will equal that of the common units. Our stock price, along with the prices of the comparative indexes, is assumed to follow the Geometric Brownian Motion Process. Geometric Brownian Motion is a common assumption when modeling in financial markets, as it allows the modeled quantity (in this case the stock price) to vary randomly from its current value and take any value greater than zero. The volatilities of the returns on our stock price and the comparative indexes were estimated based on implied volatilities and historical volatilities using an appropriate look-back period. The expected growth rate of the stock prices over the performance period is determined with consideration of the risk-free rate as of the grant date. For LTIP unit awards that are time or performance based, the fair value of the awards was estimated based on the fair value of our stock at the grant date discounted for the restriction period during which the LTIP units cannot be redeemed or transferred and the uncertainty regarding if, and when, the book capital account of the LTIP units will equal that of the common units. For restricted stock awards, the fair value of the awards are based on the market price of ESRT stock at the grant date. LTIP units and ESRT restricted stock issued during the nine months ended September 30, 2022 were valued at $22.4 million. The weighted average per unit or share fair value was $7.21 for grants issued in 2022. The fair value per unit or share granted in 2022 was estimated on the respective dates of grant using the following assumptions: an expected life from 2.0 to 5.3 years, a dividend rate of 2.0%, a risk-free interest rate from 1.4% to 2.0%, and an expected price volatility from 37.0% to 53.0%. No other stock options, dividend equivalents, or stock appreciation rights were issued or outstanding in 2022. The following is a summary of ESRT restricted stock and LTIP unit activity for the nine months ended September 30, 2022: Restricted Stock Time-based LTIPs Market-based LTIPs Performance-based LTIPs Weighted Average Grant Fair Value Unvested balance at December 31, 2021 214,408 2,499,592 5,039,134 — $ 7.02 Vested (68,867) (1,052,119) — — 9.95 Granted 232,448 1,514,434 780,155 578,943 7.21 Forfeited or unearned (17,830) — (1,311,839) — 7.21 Unvested balance at September 30, 2022 360,159 2,961,907 4,507,450 578,943 $ 6.67 The time-based LTIPs and ESRT restricted stock awards are treated for accounting purposes as immediately vested upon the later of (i) the date the grantee attains the age of 60 or 65, as applicable, and (ii) the date on which grantee has first completed ten years of continuous service with our company or its affiliates. For award agreements that qualify, we recognize noncash compensation expense on the grant date for the time-based awards and ratably over the vesting period for the market-based and performance-based awards, and accordingly, we recognized $0.4 million and $2.0 million for the three and nine months ended September 30, 2022, respectively, and $0.7 million and $2.1 million for the three and nine months ended September 30, 2021, respectively. Unrecognized compensation expense was $1.2 million at September 30, 2022, which will be recognized over a weighted average period of 3.3 years. For the remainder of the LTIP unit and ESRT restricted stock awards, we recognize noncash compensation expense ratably over the vesting period, and accordingly, we recognized noncash compensation expense of $4.8 million and $13.7 million for the three and nine months ended September 30, 2022, respectively, and $4.7 million and $13.3 million for the three and nine months ended September 30, 2021, respectively. Unrecognized compensation expense was $30.7 million at September 30, 2022, which will be recognized over a weighted average period of 2.6 years. Earnings Per Unit Earnings per unit for the three and nine months ended September 30, 2022 and 2021 is computed as follows (amounts in thousands, except per share amounts): Three Months Ended Nine Months Ended September 30, 2022 September 30, 2021 September 30, 2022 September 30, 2021 Numerator: Net income (loss) $ 10,118 $ (10,183) $ 41,592 $ (8,963) Private perpetual preferred unit distributions (1,050) (1,050) (3,151) (3,151) Net loss attributable to non-controlling interests in other partnerships 49 — 271 — Earnings allocated to unvested units — (114) — (227) Net income (loss) attributable to common unitholders – basic and diluted $ 9,117 $ (11,347) $ 38,712 $ (12,341) Denominator: Weighted average units outstanding – basic 266,035 277,716 269,880 277,829 Effect of dilutive securities: Stock-based compensation plans 1,086 — 1,086 — Weighted average units outstanding –- diluted 267,121 277,716 270,966 277,829 Earnings per share: Basic $ 0.03 $ (0.04) $ 0.14 $ (0.04) Diluted $ 0.03 $ (0.04) $ 0.14 $ (0.04) There were zero and zero antidilutive shares and LTIP units for the three and nine months ended September 30, 2022, respectively, and 1,084 and 998 antidilutive shares and LTIP units for the three and nine months ended September 30, 2021, respectively.

Related Party Transactions

Related Party Transactions	9 Months Ended
	Sep. 30, 2022
Related Party Transactions [Abstract]
Related Party Transactions	Related Party Transactions Supervisory Fee Revenue We earned supervisory fees from entities affiliated with Anthony E. Malkin, our Chairman, President and Chief Executive Officer, of $0.2 million and $0.3 million for the three months ended September 30, 2022 and 2021, respectively, and $0.8 million and $0.8 million for the nine months ended September 30, 2022 and 2021, respectively. These fees are included within third-party management and other fees. Property Management Fee Revenue We earned property management fees from entities affiliated with Anthony E. Malkin of $0.1 million and $0.1 million for the three months ended September 30, 2022 and 2021, respectively, and $0.2 million and $0.2 million for the nine months ended September 30, 2022 and 2021, respectively. These fees are included within third-party management and other fees. Other

Segment Reporting

Segment Reporting	9 Months Ended
	Sep. 30, 2022
Segment Reporting [Abstract]
Segment Reporting	Segment Reporting We have identified two reportable segments: (1) real estate and (2) observatory. Our real estate segment includes all activities related to the ownership, management, operation, acquisition, redevelopment, repositioning and disposition of our traditional real estate assets. Our observatory segment includes the operation of the 86th and 102nd floor observatories at the Empire State Building. These two lines of businesses are managed separately because each business requires different support infrastructures, provides different services and has dissimilar economic characteristics such as investments needed, stream of revenues and marketing strategies. We account for intersegment sales and rents as if the sales or rents were to third parties, that is, at current market prices. The following tables provide components of segment net income (loss) for each segment for the three and nine months ended September 30, 2022 and 2021 (amounts in thousands): Three Months Ended September 30, 2022 Real Estate Observatory Intersegment Elimination Total Revenues: Rental revenue $ 148,290 $ — $ — $ 148,290 Intercompany rental revenue 19,072 — (19,072) — Observatory revenue — 33,051 — 33,051 Lease termination fees — — — — Third-party management and other fees 389 — — 389 Other revenue and fees 1,982 — — 1,982 Total revenues 169,733 33,051 (19,072) 183,712 Operating expenses: Property operating expenses 42,798 — — 42,798 Intercompany rent expense — 19,072 (19,072) — Ground rent expense 2,331 — — 2,331 General and administrative expenses 15,725 — — 15,725 Observatory expenses — 8,516 — 8,516 Real estate taxes 31,831 — — 31,831 Depreciation and amortization 46,933 51 — 46,984 Total operating expenses 139,618 27,639 (19,072) 148,185 Total operating income 30,115 5,412 — 35,527 Other income (expense): Interest income 1,530 34 — 1,564 Interest expense (25,516) — — (25,516) Gain on disposition of property — — — — Income before income taxes 6,129 5,446 — 11,575 Income tax expense (359) (1,098) — (1,457) Net income $ 5,770 $ 4,348 $ — $ 10,118 Segment assets $ 3,950,883 $ 250,257 $ — $ 4,201,140 Expenditures for segment assets $ 18,686 $ 24 $ — $ 18,710 Three Months Ended September 30, 2021 Real Estate Observatory Intersegment Elimination Total Revenues: Rental revenue $ 139,558 $ — $ — $ 139,558 Intercompany rental revenue 5,310 — (5,310) — Observatory revenue — 12,796 — 12,796 Lease termination fees 11,321 — — 11,321 Third-party management and other fees 314 — — 314 Other revenue and fees 921 138 — 1,059 Total revenues 157,424 12,934 (5,310) 165,048 Operating expenses: Property operating expenses 33,357 — — 33,357 Intercompany rent expense — 5,310 (5,310) — Ground rent expense 2,331 — — 2,331 General and administrative expenses 14,427 — — 14,427 Observatory expenses — 6,370 — 6,370 Real estate taxes 29,566 — — 29,566 Depreciation and amortization 65,759 35 — 65,794 Total operating expenses 145,440 11,715 (5,310) 151,845 Total operating income (loss) 11,984 1,219 — 13,203 Other income (expense): Interest income 211 — — 211 Interest expense (23,577) — — (23,577) Income (loss) before income taxes (11,382) 1,219 — (10,163) Income tax (expense) benefit 53 (73) — (20) Net income (loss) $ (11,329) $ 1,146 $ — $ (10,183) Segment assets $ 3,870,142 $ 242,021 $ — $ 4,112,163 Expenditures for segment assets $ 21,349 $ — $ — $ 21,349 Nine Months Ended September 30, 2022 Real Estate Observatory Intersegment Elimination Total Revenues: Rental revenue $ 445,143 $ — $ — $ 445,143 Intercompany rental revenue 46,801 — (46,801) — Observatory revenue — 73,660 — 73,660 Lease termination fees 20,032 — — 20,032 Third-party management and other fees 1,025 — — 1,025 Other revenue and fees 5,908 — — 5,908 Total revenues 518,909 73,660 (46,801) 545,768 Operating expenses: Property operating expenses 118,875 — — 118,875 Intercompany rent expense — 46,801 (46,801) — Ground rent expense 6,994 — — 6,994 General and administrative expenses 45,287 — — 45,287 Observatory expenses — 22,507 — 22,507 Real estate taxes 91,637 — — 91,637 Depreciation and amortization 172,258 136 — 172,394 Total operating expenses 435,051 69,444 (46,801) 457,694 Total operating income (loss) 83,858 4,216 — 88,074 Other income (expense): Interest income 2,105 39 — 2,144 Interest expense (75,572) — — (75,572) Gain on disposition of property 27,170 — — 27,170 Income (loss) before income taxes 37,561 4,255 — 41,816 Income tax (expense) benefit (541) 317 — (224) Net income $ 37,020 $ 4,572 $ — $ 41,592 Expenditures for segment assets $ 70,795 $ 315 $ — $ 71,110 Nine Months Ended September 30, 2021 Real Estate Observatory Intersegment Elimination Total Revenues: Rental revenue $ 420,586 $ — $ — $ 420,586 Intercompany rental revenue 16,271 — (16,271) — Observatory revenue — 23,758 — 23,758 Lease termination fees 15,949 — — 15,949 Third-party management and other fees 917 — — 917 Other revenue and fees 2,412 138 — 2,550 Total revenues 456,135 23,896 (16,271) 463,760 Operating expenses: Property operating expenses 92,429 — — 92,429 Intercompany rent expense — 16,271 (16,271) — Ground rent expense 6,994 — — 6,994 General and administrative expenses 42,369 — — 42,369 Observatory expenses — 16,226 — 16,226 Real estate taxes 92,367 — — 92,367 Depreciation and amortization 155,244 95 — 155,339 Total operating expenses 389,403 32,592 (16,271) 405,724 Total operating income (loss) 66,732 (8,696) — 58,036 Other income (expense): Interest income 494 3 — 497 Interest expense (70,553) — — (70,553) Loss on early extinguishment of debt (214) — — (214) Income (loss) before income taxes (3,541) (8,693) — (12,234) Income tax (expense) benefit (365) 3,636 — 3,271 Net loss $ (3,906) $ (5,057) $ — $ (8,963) Expenditures for segment assets $ 64,655 $ 4 $ — $ 64,659

Subsequent Events

Subsequent Events	9 Months Ended
	Sep. 30, 2022
Subsequent Events [Abstract]
Subsequent Events	Subsequent Events None.

Summary of Significant Accoun_2

Summary of Significant Accounting Policies (Policies)	9 Months Ended
	Sep. 30, 2022
Accounting Policies [Abstract]
Basis of Quarterly Presentation	The accompanying unaudited condensed consolidated financial statements have been prepared in conformity with accounting principles generally accepted in the United States of America (“GAAP”), for interim financial information, and with the rules and regulations of the Securities and Exchange Commission (the "SEC"). Accordingly, certain information and footnote disclosures required by GAAP for complete financial statements have been condensed or omitted in accordance with such rules and regulations. In the opinion of management, all adjustments and eliminations (including intercompany balances and transactions), consisting of normal recurring adjustments, considered necessary for the fair presentation of the financial statements have been included.
Principles of Consolidation	The results of operations for the periods presented are not necessarily indicative of the results that may be expected for the corresponding full years. These financial statements should be read in conjunction with the financial statements and accompanying notes included in the financial statements for the year ended December 31, 2021 contained in our Annual Report on Form 10-K. We do not consider our business to be subject to material seasonal fluctuations, except that our observatory business is subject to tourism seasonality.
Principles of Consolidation for Variable Interest Entities	We consolidate entities in which we have a controlling financial interest.  In determining whether we have a controlling financial interest in a partially owned entity and the requirement to consolidate the accounts of that entity, we consider factors such as ownership interest, board representation, management representation, authority to make decisions, and contractual and substantive participating rights of the partners/members.  For variable interest entities ("VIE"), we consolidate the entity if we are deemed to have a variable interest in the entity and through that interest we are deemed the primary beneficiary. The primary beneficiary of a VIE is the entity that has (i) the power to direct the activities that most significantly impact the entity's economic performance and (ii) the obligation to absorb losses of the VIE or the right to receive benefits from the VIE that could be significant to the VIE. The primary beneficiary is required to consolidate the VIE. We had no VIEs as of September 30, 2022 and December 31, 2021.    We will assess the accounting treatment for each investment we may have in the future. This assessment will include a review of each entity’s organizational agreement to determine which party has what rights and whether those rights are protective or participating. For all VIEs, we will review such agreements in order to determine which party has the power to direct the activities that most significantly impact the entity’s economic performance and benefit. In situations where we or our partner could approve, among other things, the annual budget, or leases that cover more than a nominal amount of space relative to the total rentable space at each property, we would not consolidate the investment as we consider these to be substantive participation rights that result in shared power of the activities that would most significantly impact the performance and benefit of such joint venture investment.     A non-controlling interest in a consolidated subsidiary is defined as the portion of the equity (net assets) in a subsidiary not attributable, directly or indirectly, to a parent. Non-controlling interests are required to be presented as a separate component of equity in the condensed consolidated balance sheets and in the condensed consolidated statements of operations by requiring earnings and other comprehensive income to be attributed to controlling and non-controlling interests.
Accounting Estimates	The preparation of the condensed consolidated financial statements in accordance with GAAP requires management to use estimates and assumptions that in certain circumstances affect the reported amounts of assets and liabilities, the disclosure of contingent assets and liabilities, and the reported revenues and expenses. Significant items subject to such estimates and assumptions include allocation of the purchase price of acquired real estate properties among tangible and intangible assets, determination of the useful life of real estate properties and other long-lived assets, valuation and impairment analysis of commercial real estate properties, right of use assets and other long-lived and indefinite lived assets, estimate of tenant expense reimbursements, valuation of the allowance for doubtful accounts, and valuation of derivative instruments, ground lease liabilities, senior unsecured notes, mortgage notes payable, unsecured term loan and revolving credit facilities, and equity based compensation. These estimates are prepared using management’s best judgment, after considering past, current, and expected events and economic conditions. Actual results could differ from those estimates.
Fair Valuation	The estimated fair values at September 30, 2022 and December 31, 2021 were determined by management, using available market information and appropriate valuation methodologies. Considerable judgment is necessary to interpret market data and develop estimated fair value. Accordingly, the estimates presented herein are not necessarily indicative of the amounts we could realize on disposition of the financial instruments. The use of different market assumptions and/or estimation methodologies may have a material effect on the estimated fair value amounts.     The fair value of derivative instruments is determined using widely accepted valuation techniques, including discounted cash flow analysis on the expected cash flows of each derivative. Although the majority of the inputs used to value our derivatives fall within Level 2 of the fair value hierarchy, the credit valuation adjustments associated with our derivatives utilize Level 3 inputs, such as estimates of current credit spreads to evaluate the likelihood of default by ourselves and our counterparties. The impact of such credit valuation adjustments, determined based on the fair value of each individual contract, was not significant to the overall valuation. As a result, all our derivatives were classified as Level 2 of the fair value hierarchy.    The fair values of our mortgage notes payable, senior unsecured notes - Series A, B, C, D, E, F, G and H - unsecured term loan facilities and unsecured revolving credit facility which are determined using Level 3 inputs are estimated by discounting the future cash flows using current interest rates at which similar borrowings could be made by us.

Deferred Costs, Acquired Leas_2

Deferred Costs, Acquired Lease Intangibles and Goodwill (Tables)	9 Months Ended
	Sep. 30, 2022
Deferred Costs, Capitalized, Prepaid, and Other Assets Disclosure [Abstract]
Schedule of Deferred Costs, Net	Deferred costs, net, consisted of the following as of September 30, 2022 and December 31, 2021 (amounts in thousands): September 30, 2022 December 31, 2021 Leasing costs $ 218,552 $ 211,189 Acquired in-place lease value and deferred leasing costs 158,286 166,491 Acquired above-market leases 28,123 33,289 404,961 410,969 Less: accumulated amortization (221,751) (215,764) Total deferred costs, net, excluding net deferred financing costs $ 183,210 $ 195,205 September 30, 2022 December 31, 2021 Financing costs $ 44,065 $ 44,637 Less: accumulated amortization (25,875) (22,525) Total deferred financing costs, net $ 18,190 $ 22,112
Schedule of Amortizing Acquired Intangible Assets and Liabilities	Amortizing acquired intangible assets and liabilities consisted of the following as of September 30, 2022 and December 31, 2021 (amounts in thousands): September 30, 2022 December 31, 2021 Acquired below-market ground leases $ 396,916 $ 396,916 Less: accumulated amortization (65,886) (60,012) Acquired below-market ground leases, net $ 331,030 $ 336,904 September 30, 2022 December 31, 2021 Acquired below-market leases $ (64,529) $ (65,403) Less: accumulated amortization 45,632 40,462 Acquired below-market leases, net $ (18,897) $ (24,941)

Debt (Tables)

Debt (Tables)	9 Months Ended
	Sep. 30, 2022
Debt Disclosure [Abstract]
Schedule of Long-Term Debt	Debt consisted of the following as of September 30, 2022 and December 31, 2021 (amounts in thousands): Principal Balance As of September 30, 2022 September 30, 2022 December 31, 2021 Stated Effective (1) Maturity (2) Mortgage debt collateralized by: Fixed rate mortgage debt Metro Center $ 83,213 $ 85,032 3.59 % 3.67 % 11/5/2024 10 Union Square 50,000 50,000 3.70 % 3.97 % 4/1/2026 1542 Third Avenue 30,000 30,000 4.29 % 4.53 % 5/1/2027 First Stamford Place (3) 179,549 180,000 4.28 % 4.73 % 7/1/2027 1010 Third Avenue and 77 West 55th Street 36,044 36,670 4.01 % 4.21 % 1/5/2028 250 West 57th Street 180,000 180,000 2.83 % 3.21 % 12/1/2030 10 Bank Street 30,364 31,091 4.23 % 4.37 % 6/1/2032 383 Main Avenue (4) — 30,000 — % — % — 1333 Broadway 160,000 160,000 4.21 % 4.29 % 2/5/2033 345 East 94th Street - Series A 43,600 43,600 70.0% of LIBOR plus 0.95% 3.56 % 11/1/2030 345 East 94th Street - Series B 8,021 8,650 LIBOR plus 2.24% 3.56 % 11/1/2030 561 10th Avenue - Series A 114,500 114,500 70.0% of LIBOR plus 1.07% 3.85 % 11/1/2033 561 10th Avenue - Series B 17,797 19,250 LIBOR plus 2.45% 3.85 % 11/1/2033 Total mortgage debt 933,088 968,793 Senior unsecured notes: (5) Series A 100,000 100,000 3.93 % 3.96 % 3/27/2025 Series B 125,000 125,000 4.09 % 4.12 % 3/27/2027 Series C 125,000 125,000 4.18 % 4.21 % 3/27/2030 Series D 115,000 115,000 4.08 % 4.11 % 1/22/2028 Series E 160,000 160,000 4.26 % 4.27 % 3/22/2030 Series F 175,000 175,000 4.44 % 4.45 % 3/22/2033 Series G 100,000 100,000 3.61 % 4.89 % 3/17/2032 Series H 75,000 75,000 3.73 % 5.00 % 3/17/2035 Unsecured term loan facility (5) (6) 215,000 215,000 SOFR plus 1.20% 4.22 % 3/19/2025 Unsecured revolving credit facility (5) (6) — — SOFR plus 1.30% — 3/31/2025 Unsecured term loan facility (5) (6) 175,000 175,000 SOFR plus 1.50% 4.51 % 12/31/2026 Total principal 2,298,088 2,333,793 Deferred financing costs, net (12,694) (14,881) Unamortized debt discount (7,940) (8,547) Total $ 2,277,454 $ 2,310,365 ______________ (1) The effective rate is the yield as of September 30, 2022 and includes the stated interest rate, deferred financing cost amortization and interest associated with variable to fixed interest rate swap agreements. (2) Pre-payment is generally allowed for each loan upon payment of a customary pre-payment penalty. (3) Represents a $164 million mortgage loan bearing interest at 4.09% and a $15.5 million loan bearing interest at 6.25%. (4) Ownership of 383 Main Avenue, Norwalk CT was transferred to the lender during April 2022. (5) At September 30, 2022, we were in compliance with all debt covenants. (6) As of August 29, 2022, the benchmark index interest rate was converted from LIBOR to SOFR, plus a benchmark adjustment of 10.0 basis points.
Schedule of Aggregate Required Principal Payments	Aggregate required principal payments at September 30, 2022 are as follows (amounts in thousands): Year Amortization Maturities Total 2022 $ 2,160 $ — $ 2,160 2023 9,632 — 9,632 2024 9,903 77,675 87,578 2025 7,979 315,000 322,979 2026 8,491 225,000 233,491 Thereafter 35,966 1,606,282 1,642,248 Total $ 74,131 $ 2,223,957 $ 2,298,088
Schedule of Deferred Costs, Net	Deferred costs, net, consisted of the following as of September 30, 2022 and December 31, 2021 (amounts in thousands): September 30, 2022 December 31, 2021 Leasing costs $ 218,552 $ 211,189 Acquired in-place lease value and deferred leasing costs 158,286 166,491 Acquired above-market leases 28,123 33,289 404,961 410,969 Less: accumulated amortization (221,751) (215,764) Total deferred costs, net, excluding net deferred financing costs $ 183,210 $ 195,205 September 30, 2022 December 31, 2021 Financing costs $ 44,065 $ 44,637 Less: accumulated amortization (25,875) (22,525) Total deferred financing costs, net $ 18,190 $ 22,112

Accounts Payable and Accrued _2

Accounts Payable and Accrued Expenses (Tables)	9 Months Ended
	Sep. 30, 2022
Payables and Accruals [Abstract]
Schedule of Accounts Payable and Accrued Expenses	Accounts payable and accrued expenses consisted of the following as of September 30, 2022 and December 31, 2021 (amounts in thousands): September 30, 2022 December 31, 2021 Accrued capital expenditures $ 55,320 $ 49,247 Accounts payable and accrued expenses 36,353 41,664 Interest rate swaps liability — 25,308 Accrued interest payable 3,294 3,460 Due (from) to affiliated companies (531) 1,131 Total accounts payable and accrued expenses $ 94,436 $ 120,810

Financial Instruments and Fai_2

Financial Instruments and Fair Values (Tables)	9 Months Ended
	Sep. 30, 2022
Fair Value Disclosures [Abstract]
Schedule of the Terms of Agreements and the Fair Value of Derivative Financial Instruments	The table below summarizes the terms of agreements and the fair values of our derivative financial instruments as of September 30, 2022 and December 31, 2021 (amounts in thousands): September 30, 2022 December 31, 2021 Derivative Notional Amount Receive Rate Pay Rate Effective Date Expiration Date Asset Liability Asset Liability Interest rate swap $ 265,000 1 Month LIBOR 2.1485% August 31, 2017 August 24, 2022 $ — $ — $ — $ (3,184) Interest rate swap 36,820 70% of 1 Month LIBOR 2.5000% December 1, 2021 November 1, 2030 324 — — (4,527) Interest rate swap 103,790 70% of 1 Month LIBOR 2.5000% December 1, 2021 November 1, 2033 324 — — (15,945) Interest rate swap 10,710 70% of 1 Month LIBOR 1.7570% December 1, 2021 November 1, 2033 657 — (754) Interest rate swap 19,008 1 Month LIBOR 2.2540% December 1, 2021 November 1, 2030 1,143 — — (898) Interest rate cap 6,780 70% of 1 Month LIBOR 4.5000% December 1, 2021 October 1, 2024 16 — 5 — Interest rate cap 9,188 1 Month LIBOR 5.5000% December 1, 2021 October 1, 2024 43 — 8 — Interest rate swap 175,000 SOFR Compound 2.5620% August 31, 2022 December 31, 2026 8,713 — — — Interest rate swap 107,500 SOFR Compound 2.6260% August 19, 2022 March 19, 2025 3,649 — — — Interest rate swap 107,500 SOFR OIS Compound 2.6280% August 19, 2022 March 19, 2025 3,646 — — — $ 18,515 $ — $ 13 $ (25,308)
Schedule of Effect of Derivative Financial Instruments Designated as Cash Flow Hedges on Accumulated Other Comprehensive Income (Loss)	The table below shows the effect of our derivative financial instruments designated as cash flow hedges on accumulated other comprehensive income (loss) for the three and nine months ended September 30, 2022 and 2021 (amounts in thousands): Three Months Ended Nine Months Ended Effects of Cash Flow Hedges September 30, 2022 September 30, 2021 September 30, 2022 September 30, 2021 Amount of gain (loss) recognized in other comprehensive income (loss) $ 19,588 $ (103) $ 39,407 $ (139) Amount of loss reclassified from accumulated other comprehensive income ( loss) into interest expense (1,392) (2,920) (7,428) (8,687) The table below shows the effect of our derivative financial instruments designated as cash flow hedges on the condensed consolidated statements of operations for the three and nine months ended September 30, 2022 and 2021 (amounts in thousands): Three Months Ended Nine Months Ended Effects of Cash Flow Hedges September 30, 2022 September 30, 2021 September 30, 2022 September 30, 2021 Total interest expense presented in the condensed consolidated statements of operations in which the effects of cash flow hedges are recorded $ (25,516) $ (23,577) $ (75,572) $ (70,553) Amount of loss reclassified from accumulated other comprehensive income (loss) into interest expense (1,392) (2,920) (7,428) (8,687)
Schedule of the Carrying and Estimated Fair Values of Financial Instruments	The following tables summarize the carrying and estimated fair values of our financial instruments as of September 30, 2022 and December 31, 2021 (amounts in thousands): September 30, 2022 Estimated Fair Value Carrying Total Level 1 Level 2 Level 3 Interest rate swaps included in prepaid expenses and other assets $ 18,457 $ 18,457 $ — $ 18,457 $ — Mortgage notes payable 915,202 809,720 — — 809,720 Senior unsecured notes - Series A, B, C, D, E, F, G and H 973,607 862,768 — — 862,768 Unsecured term loan facilities 388,645 390,000 — — 390,000 December 31, 2021 Estimated Fair Value Carrying Total Level 1 Level 2 Level 3 Interest rate swap included in accounts payable and accrued expenses $ 25,308 $ 25,308 $ — $ 25,308 $ — Mortgage notes payable 948,769 960,933 — — 960,933 Senior unsecured notes - Series A, B, C, D, E, F, G and H 973,373 994,389 — — 994,389 Unsecured term loan facilities 388,223 390,000 — — 390,000

Leases (Tables)

Leases (Tables)	9 Months Ended
	Sep. 30, 2022
Leases [Abstract]
Schedule of Components of Rental Revenue	The components of rental revenue for the three and nine months ended September 30, 2022 and 2021 are as follows (amounts in thousands): Three Months Ended Nine Months Ended Rental revenue September 30, 2022 September 30, 2021 September 30, 2022 September 30, 2021 Fixed payments $ 131,800 $ 124,764 $ 399,995 $ 374,968 Variable payments 16,490 14,794 45,148 45,618 Total rental revenue $ 148,290 $ 139,558 $ 445,143 $ 420,586
Schedule of Future Contractual Minimum Lease Payments On Non-Cancellable Operating Leases To Be Received	As of September 30, 2022, we were entitled to the following future contractual minimum lease payments (excluding operating expense reimbursements) on non-cancellable operating leases to be received which expire on various dates through 2039 (amounts in thousands): Remainder of 2022 $ 120,126 2023 487,764 2024 480,189 2025 448,981 2026 407,826 Thereafter 1,934,341 $ 3,879,227
Schedule of Future Minimum Lease Payments	As of September 30, 2022, the following table summarizes our future minimum lease payments discounted by our incremental borrowing rates to calculate the lease liabilities of our leases (amounts in thousands): Remainder of 2022 $ 380 2023 1,518 2024 1,518 2025 1,518 2026 1,518 Thereafter 63,744 Total undiscounted cash flows 70,196 Present value discount (41,471) Ground lease liabilities $ 28,725

Capital (Tables)

Capital (Tables)	9 Months Ended
	Sep. 30, 2022
Equity [Abstract]
Schedule of Equity Securities Repurchased	The following table summarizes ESRT's purchases of equity securities in each of the three months ended September 30, 2022: Period Total Number of Shares Purchased Weighted Average Price Paid per Share Maximum Approximate Dollar Value Available for Future Purchase (in thousands) July 2022 184,045 $ 6.92 $ 434,286 August 2022 621,314 $ 7.32 $ 429,736 September 2022 1,761,561 $ 6.97 $ 417,455
Schedule of ERST Restricted Stock and LTIP Unit Activity	The following is a summary of ESRT restricted stock and LTIP unit activity for the nine months ended September 30, 2022: Restricted Stock Time-based LTIPs Market-based LTIPs Performance-based LTIPs Weighted Average Grant Fair Value Unvested balance at December 31, 2021 214,408 2,499,592 5,039,134 — $ 7.02 Vested (68,867) (1,052,119) — — 9.95 Granted 232,448 1,514,434 780,155 578,943 7.21 Forfeited or unearned (17,830) — (1,311,839) — 7.21 Unvested balance at September 30, 2022 360,159 2,961,907 4,507,450 578,943 $ 6.67
Schedule of Earnings Per Unit	Earnings per unit for the three and nine months ended September 30, 2022 and 2021 is computed as follows (amounts in thousands, except per share amounts): Three Months Ended Nine Months Ended September 30, 2022 September 30, 2021 September 30, 2022 September 30, 2021 Numerator: Net income (loss) $ 10,118 $ (10,183) $ 41,592 $ (8,963) Private perpetual preferred unit distributions (1,050) (1,050) (3,151) (3,151) Net loss attributable to non-controlling interests in other partnerships 49 — 271 — Earnings allocated to unvested units — (114) — (227) Net income (loss) attributable to common unitholders – basic and diluted $ 9,117 $ (11,347) $ 38,712 $ (12,341) Denominator: Weighted average units outstanding – basic 266,035 277,716 269,880 277,829 Effect of dilutive securities: Stock-based compensation plans 1,086 — 1,086 — Weighted average units outstanding –- diluted 267,121 277,716 270,966 277,829 Earnings per share: Basic $ 0.03 $ (0.04) $ 0.14 $ (0.04) Diluted $ 0.03 $ (0.04) $ 0.14 $ (0.04)

Segment Reporting (Tables)

Segment Reporting (Tables)	9 Months Ended
	Sep. 30, 2022
Segment Reporting [Abstract]
Schedule of Segment Net Income (Loss) for Each Segment	The following tables provide components of segment net income (loss) for each segment for the three and nine months ended September 30, 2022 and 2021 (amounts in thousands): Three Months Ended September 30, 2022 Real Estate Observatory Intersegment Elimination Total Revenues: Rental revenue $ 148,290 $ — $ — $ 148,290 Intercompany rental revenue 19,072 — (19,072) — Observatory revenue — 33,051 — 33,051 Lease termination fees — — — — Third-party management and other fees 389 — — 389 Other revenue and fees 1,982 — — 1,982 Total revenues 169,733 33,051 (19,072) 183,712 Operating expenses: Property operating expenses 42,798 — — 42,798 Intercompany rent expense — 19,072 (19,072) — Ground rent expense 2,331 — — 2,331 General and administrative expenses 15,725 — — 15,725 Observatory expenses — 8,516 — 8,516 Real estate taxes 31,831 — — 31,831 Depreciation and amortization 46,933 51 — 46,984 Total operating expenses 139,618 27,639 (19,072) 148,185 Total operating income 30,115 5,412 — 35,527 Other income (expense): Interest income 1,530 34 — 1,564 Interest expense (25,516) — — (25,516) Gain on disposition of property — — — — Income before income taxes 6,129 5,446 — 11,575 Income tax expense (359) (1,098) — (1,457) Net income $ 5,770 $ 4,348 $ — $ 10,118 Segment assets $ 3,950,883 $ 250,257 $ — $ 4,201,140 Expenditures for segment assets $ 18,686 $ 24 $ — $ 18,710 Three Months Ended September 30, 2021 Real Estate Observatory Intersegment Elimination Total Revenues: Rental revenue $ 139,558 $ — $ — $ 139,558 Intercompany rental revenue 5,310 — (5,310) — Observatory revenue — 12,796 — 12,796 Lease termination fees 11,321 — — 11,321 Third-party management and other fees 314 — — 314 Other revenue and fees 921 138 — 1,059 Total revenues 157,424 12,934 (5,310) 165,048 Operating expenses: Property operating expenses 33,357 — — 33,357 Intercompany rent expense — 5,310 (5,310) — Ground rent expense 2,331 — — 2,331 General and administrative expenses 14,427 — — 14,427 Observatory expenses — 6,370 — 6,370 Real estate taxes 29,566 — — 29,566 Depreciation and amortization 65,759 35 — 65,794 Total operating expenses 145,440 11,715 (5,310) 151,845 Total operating income (loss) 11,984 1,219 — 13,203 Other income (expense): Interest income 211 — — 211 Interest expense (23,577) — — (23,577) Income (loss) before income taxes (11,382) 1,219 — (10,163) Income tax (expense) benefit 53 (73) — (20) Net income (loss) $ (11,329) $ 1,146 $ — $ (10,183) Segment assets $ 3,870,142 $ 242,021 $ — $ 4,112,163 Expenditures for segment assets $ 21,349 $ — $ — $ 21,349 Nine Months Ended September 30, 2022 Real Estate Observatory Intersegment Elimination Total Revenues: Rental revenue $ 445,143 $ — $ — $ 445,143 Intercompany rental revenue 46,801 — (46,801) — Observatory revenue — 73,660 — 73,660 Lease termination fees 20,032 — — 20,032 Third-party management and other fees 1,025 — — 1,025 Other revenue and fees 5,908 — — 5,908 Total revenues 518,909 73,660 (46,801) 545,768 Operating expenses: Property operating expenses 118,875 — — 118,875 Intercompany rent expense — 46,801 (46,801) — Ground rent expense 6,994 — — 6,994 General and administrative expenses 45,287 — — 45,287 Observatory expenses — 22,507 — 22,507 Real estate taxes 91,637 — — 91,637 Depreciation and amortization 172,258 136 — 172,394 Total operating expenses 435,051 69,444 (46,801) 457,694 Total operating income (loss) 83,858 4,216 — 88,074 Other income (expense): Interest income 2,105 39 — 2,144 Interest expense (75,572) — — (75,572) Gain on disposition of property 27,170 — — 27,170 Income (loss) before income taxes 37,561 4,255 — 41,816 Income tax (expense) benefit (541) 317 — (224) Net income $ 37,020 $ 4,572 $ — $ 41,592 Expenditures for segment assets $ 70,795 $ 315 $ — $ 71,110 Nine Months Ended September 30, 2021 Real Estate Observatory Intersegment Elimination Total Revenues: Rental revenue $ 420,586 $ — $ — $ 420,586 Intercompany rental revenue 16,271 — (16,271) — Observatory revenue — 23,758 — 23,758 Lease termination fees 15,949 — — 15,949 Third-party management and other fees 917 — — 917 Other revenue and fees 2,412 138 — 2,550 Total revenues 456,135 23,896 (16,271) 463,760 Operating expenses: Property operating expenses 92,429 — — 92,429 Intercompany rent expense — 16,271 (16,271) — Ground rent expense 6,994 — — 6,994 General and administrative expenses 42,369 — — 42,369 Observatory expenses — 16,226 — 16,226 Real estate taxes 92,367 — — 92,367 Depreciation and amortization 155,244 95 — 155,339 Total operating expenses 389,403 32,592 (16,271) 405,724 Total operating income (loss) 66,732 (8,696) — 58,036 Other income (expense): Interest income 494 3 — 497 Interest expense (70,553) — — (70,553) Loss on early extinguishment of debt (214) — — (214) Income (loss) before income taxes (3,541) (8,693) — (12,234) Income tax (expense) benefit (365) 3,636 — 3,271 Net loss $ (3,906) $ (5,057) $ — $ (8,963) Expenditures for segment assets $ 64,655 $ 4 $ — $ 64,659

Description of Business and O_2

Description of Business and Organization (Details) ft² in Millions	9 Months Ended
	Sep. 30, 2022 ft² parcel office_property multifamily_property property_unit
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Area of real estate property (in square feet)	9.9
Empire state realty OP | Empire state realty trust
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
OP units owned by the company (as a percent)	59.30%
Office Building
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Area of real estate property (in square feet)	9.2
Number of offices and properties | office_property	13
Office Building | Manhattan
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Area of real estate property (in square feet)	7.6
Number of offices and properties | office_property	9
Office Building | Fairfield County, Connecticut and Westchester County, New York
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Area of real estate property (in square feet)	1.6
Number of offices and properties | office_property	4
Development Parcel
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of offices and properties | parcel	3
Retail Site | Manhattan and Westport, Connecticut
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Area of real estate property (in square feet)	0.2
Retail Site | Manhattan
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Area of real estate property (in square feet)	0.5
Number of offices and properties | office_property	4
Retail Site | Westport, Connecticut
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of offices and properties | office_property	2
Other Property | Stamford, Connecticut
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Area of real estate property (in square feet)	0.4
Multifamily
Organization, Consolidation and Presentation of Financial Statements Disclosure [Line Items]
Number of offices and properties | multifamily_property	2
Number of property units | property_unit	625

Summary of Significant Accoun_3

Summary of Significant Accounting Policies (Details)	Sep. 30, 2022
Minimum
Accounting Policies [Line Items]
Observatory revenue realized during the first quarter, previous ten years (as a percent)	16%
Observatory revenue realized during the second quarter, previous ten years (as a percent)	26%
Observatory revenue realized during the third quarter, previous ten years (as a percent)	31%
Observatory revenue realized during the fourth quarter, previous ten years (as a percent)	23%
Maximum
Accounting Policies [Line Items]
Observatory revenue realized during the first quarter, previous ten years (as a percent)	18%
Observatory revenue realized during the second quarter, previous ten years (as a percent)	28%
Observatory revenue realized during the third quarter, previous ten years (as a percent)	33%
Observatory revenue realized during the fourth quarter, previous ten years (as a percent)	25%

Property Disposition (Details)

Property Disposition (Details) - USD ($) $ in Thousands	1 Months Ended		3 Months Ended		9 Months Ended
	Apr. 30, 2022	Dec. 31, 2021	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Nov. 03, 2022
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Mortgage notes payable, net	$ 30,000	$ 948,769	$ 915,202		$ 915,202
Gain on disposition of property	$ 27,200		$ 0	$ 0	$ 27,170	$ 0
Impairment charges		$ 7,700
Subsequent Event | Disposal Group, Disposed of by Sale, Not Discontinued Operations | Mamaroneck Avenue And Bank Street
Income Statement, Balance Sheet and Additional Disclosures by Disposal Groups, Including Discontinued Operations [Line Items]
Assets							$ 95,000

Deferred Costs, Acquired Leas_3

Deferred Costs, Acquired Lease Intangibles and Goodwill - Deferred Costs, Net (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Finite-Lived Intangible Assets [Line Items]
Leasing costs	$ 218,552	$ 211,189
Total deferred costs, gross amount	404,961	410,969
Less: accumulated amortization	(221,751)	(215,764)
Total deferred costs, net, excluding net deferred financing costs	183,210	195,205
Acquired in-place lease value and deferred leasing costs
Finite-Lived Intangible Assets [Line Items]
Acquired finite-lived intangible assets	158,286	166,491
Acquired above-market leases
Finite-Lived Intangible Assets [Line Items]
Acquired finite-lived intangible assets	$ 28,123	$ 33,289

Deferred Costs, Acquired Leas_4

Deferred Costs, Acquired Lease Intangibles and Goodwill - Narrative (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Deferred Costs [Line Items]
Amortization expense related to deferred leasing costs	$ 5,600	$ 10,400	$ 19,800	$ 22,100
Rental revenue related to amortization of below-market leases, net of above-market leases	700	4,200	4,136	5,615
Goodwill	491,479		491,479		$ 491,479
Observatory
Deferred Costs [Line Items]
Goodwill	227,500		227,500
Real estate
Deferred Costs [Line Items]
Goodwill	264,000		264,000
Lease agreements
Deferred Costs [Line Items]
Amortization expense related to acquired lease intangibles	2,200	$ 5,000	10,600	$ 8,300
Unsecured revolving credit facility | Revolving credit facility
Deferred Costs [Line Items]
Net deferred financing costs	$ 5,500		$ 5,500		$ 7,200

Deferred Costs, Acquired Leas_5

Deferred Costs, Acquired Lease Intangibles and Goodwill - Amortizing Acquired Intangible Assets and Liabilities (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Acquired below-market ground leases, net
Acquired below-market ground leases	$ 396,916	$ 396,916
Less: accumulated amortization	(65,886)	(60,012)
Acquired below-market ground leases, net	331,030	336,904
Acquired below-market leases, net
Acquired below-market leases	(64,529)	(65,403)
Less: accumulated amortization	45,632	40,462
Acquired below-market leases, net	$ (18,897)	$ (24,941)

Debt - Long-Term Debt (Details)

Debt - Long-Term Debt (Details)	9 Months Ended
	Sep. 30, 2022 USD ($)	Aug. 29, 2022	Dec. 31, 2021 USD ($)
Debt Instrument [Line Items]
Outstanding borrowings	$ 0		$ 0
Total principal	2,298,088,000
Deferred financing costs, net	(18,190,000)		(22,112,000)
Adjustment benchmark		0.00100
Fixed rate mortgage debt
Debt Instrument [Line Items]
Fixed rate mortgage debt	933,088,000		968,793,000
Mortgages, senior notes, and unsecured term loan facilities, not including unsecured revolving credit facility
Debt Instrument [Line Items]
Total principal	2,298,088,000		2,333,793,000
Deferred financing costs, net	(12,694,000)		(14,881,000)
Unamortized debt discount	(7,940,000)		(8,547,000)
Total	2,277,454,000		2,310,365,000
Metro Center | Fixed rate mortgage debt
Debt Instrument [Line Items]
Fixed rate mortgage debt	$ 83,213,000		85,032,000
Stated Rate (as a percent)	3.59%
Effective Rate (as a percent)	3.67%
10 Union Square | Fixed rate mortgage debt
Debt Instrument [Line Items]
Fixed rate mortgage debt	$ 50,000,000		50,000,000
Stated Rate (as a percent)	3.70%
Effective Rate (as a percent)	3.97%
1542 Third Avenue | Fixed rate mortgage debt
Debt Instrument [Line Items]
Fixed rate mortgage debt	$ 30,000,000		30,000,000
Stated Rate (as a percent)	4.29%
Effective Rate (as a percent)	4.53%
First Stamford Place | Fixed rate mortgage debt
Debt Instrument [Line Items]
Fixed rate mortgage debt	$ 179,549,000		180,000,000
Stated Rate (as a percent)	4.28%
Effective Rate (as a percent)	4.73%
First Stamford Place - First Lien | Fixed rate mortgage debt
Debt Instrument [Line Items]
Stated Rate (as a percent)	4.09%
Face amount	$ 164,000,000
First Stamford Place - Second Lien | Fixed rate mortgage debt
Debt Instrument [Line Items]
Stated Rate (as a percent)	6.25%
Face amount	$ 15,500,000
1010 Third Avenue and 77 West 55th Street | Fixed rate mortgage debt
Debt Instrument [Line Items]
Fixed rate mortgage debt	$ 36,044,000		36,670,000
Stated Rate (as a percent)	4.01%
Effective Rate (as a percent)	4.21%
250 West 57th Street | Fixed rate mortgage debt
Debt Instrument [Line Items]
Fixed rate mortgage debt	$ 180,000,000		180,000,000
Stated Rate (as a percent)	2.83%
Effective Rate (as a percent)	3.21%
10 Bank Street | Fixed rate mortgage debt
Debt Instrument [Line Items]
Fixed rate mortgage debt	$ 30,364,000		31,091,000
Stated Rate (as a percent)	4.23%
Effective Rate (as a percent)	4.37%
383 Main Avenue | Fixed rate mortgage debt
Debt Instrument [Line Items]
Fixed rate mortgage debt	$ 0		30,000,000
Stated Rate (as a percent)	0%
Effective Rate (as a percent)	0%
1333 Broadway | Fixed rate mortgage debt
Debt Instrument [Line Items]
Fixed rate mortgage debt	$ 160,000,000		160,000,000
Stated Rate (as a percent)	4.21%
Effective Rate (as a percent)	4.29%
345 East 94th Street - Series A | Revolving credit facility | LIBOR
Debt Instrument [Line Items]
Variable rate, effective percentage (as a percent)	70%
Basis spread on variable rate (as a percent)	0.95%
345 East 94th Street - Series A | Fixed rate mortgage debt
Debt Instrument [Line Items]
Fixed rate mortgage debt	$ 43,600,000		43,600,000
Effective Rate (as a percent)	3.56%
345 East 94th Street - Series B | Revolving credit facility | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.24%
345 East 94th Street - Series B | Fixed rate mortgage debt
Debt Instrument [Line Items]
Fixed rate mortgage debt	$ 8,021,000		8,650,000
Effective Rate (as a percent)	3.56%
561 10th Avenue - Series A | Revolving credit facility | LIBOR
Debt Instrument [Line Items]
Variable rate, effective percentage (as a percent)	70%
Basis spread on variable rate (as a percent)	1.07%
561 10th Avenue - Series A | Fixed rate mortgage debt
Debt Instrument [Line Items]
Fixed rate mortgage debt	$ 114,500,000		114,500,000
Effective Rate (as a percent)	3.85%
561 10th Avenue - Series B | Revolving credit facility | LIBOR
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	2.45%
561 10th Avenue - Series B | Fixed rate mortgage debt
Debt Instrument [Line Items]
Fixed rate mortgage debt	$ 17,797,000		19,250,000
Effective Rate (as a percent)	3.85%
Series A | Senior unsecured notes
Debt Instrument [Line Items]
Total	$ 100,000,000		100,000,000
Stated Rate (as a percent)	3.93%
Effective Rate (as a percent)	3.96%
Series B | Senior unsecured notes
Debt Instrument [Line Items]
Total	$ 125,000,000		125,000,000
Stated Rate (as a percent)	4.09%
Effective Rate (as a percent)	4.12%
Series C | Senior unsecured notes
Debt Instrument [Line Items]
Total	$ 125,000,000		125,000,000
Stated Rate (as a percent)	4.18%
Effective Rate (as a percent)	4.21%
Series D | Senior unsecured notes
Debt Instrument [Line Items]
Total	$ 115,000,000		115,000,000
Stated Rate (as a percent)	4.08%
Effective Rate (as a percent)	4.11%
Series E | Senior unsecured notes
Debt Instrument [Line Items]
Total	$ 160,000,000		160,000,000
Stated Rate (as a percent)	4.26%
Effective Rate (as a percent)	4.27%
Series F | Senior unsecured notes
Debt Instrument [Line Items]
Total	$ 175,000,000		175,000,000
Stated Rate (as a percent)	4.44%
Effective Rate (as a percent)	4.45%
Series G | Senior unsecured notes
Debt Instrument [Line Items]
Total	$ 100,000,000		100,000,000
Stated Rate (as a percent)	3.61%
Effective Rate (as a percent)	4.89%
Series H | Senior unsecured notes
Debt Instrument [Line Items]
Total	$ 75,000,000		75,000,000
Stated Rate (as a percent)	3.73%
Effective Rate (as a percent)	5%
Unsecured term loan facilities | Revolving credit facility
Debt Instrument [Line Items]
Outstanding borrowings	$ 215,000,000		215,000,000
Effective Rate (as a percent)	4.22%
Unsecured term loan facilities | Revolving credit facility | SOFR
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.20%
Unsecured revolving credit facility | Revolving credit facility
Debt Instrument [Line Items]
Outstanding borrowings	$ 0		0
Effective Rate (as a percent)	0%
Unsecured revolving credit facility | Revolving credit facility | SOFR
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.30%
Unsecured term loan facilities | Revolving credit facility
Debt Instrument [Line Items]
Outstanding borrowings	$ 175,000,000		$ 175,000,000
Effective Rate (as a percent)	4.51%
Unsecured term loan facilities | Revolving credit facility | SOFR
Debt Instrument [Line Items]
Basis spread on variable rate (as a percent)	1.50%

Debt - Aggregate Required Princ

Debt - Aggregate Required Principal Payments (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Amortization
2022	$ 2,160
2023	9,632
2024	9,903
2025	7,979
2026	8,491
Thereafter	35,966
Total	74,131
Maturities
2022	0
2023	0
2024	77,675
2025	315,000
2026	225,000
Thereafter	1,606,282
Total	2,223,957
Total
2022	2,160
2023	9,632
2024	87,578
2025	322,979
2026	233,491
Thereafter	1,642,248
Total	$ 2,298,088

Debt - Deferred Financing Costs

Debt - Deferred Financing Costs, Net (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Debt Disclosure [Abstract]
Financing costs	$ 44,065		$ 44,065		$ 44,637
Less: accumulated amortization	(25,875)		(25,875)		(22,525)
Total deferred financing costs, net	18,190		18,190		$ 22,112
Amortization expense related to deferred financing costs	$ 1,200	$ 1,100	$ 3,800	$ 3,400

Debt - Unsecured Revolving Cred

Debt - Unsecured Revolving Credit and Term Loan Facilities (Details) - USD ($)	Sep. 30, 2022	Dec. 31, 2021	Mar. 19, 2020
Line of Credit Facility [Line Items]
Outstanding borrowings	$ 0	$ 0
Revolving credit facility | Credit Facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	1,065,000,000
Revolving credit facility | Unsecured revolving credit facility
Line of Credit Facility [Line Items]
Maximum borrowing capacity	850,000,000
Outstanding borrowings	0	0
Revolving credit facility | Unsecured term loan facilities
Line of Credit Facility [Line Items]
Maximum borrowing capacity	215,000,000
Outstanding borrowings	215,000,000	215,000,000
Revolving credit facility | Unsecured term loan facilities
Line of Credit Facility [Line Items]
Maximum borrowing capacity			$ 175,000,000
Outstanding borrowings	$ 175,000,000	$ 175,000,000
Accordion feature, new maximum borrowing capacity			$ 225,000,000

Accounts Payable and Accrued _3

Accounts Payable and Accrued Expenses (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Payables and Accruals [Abstract]
Accrued capital expenditures	$ 55,320	$ 49,247
Accounts payable and accrued expenses	36,353	41,664
Interest rate swaps liability	0	25,308
Accrued interest payable	3,294	3,460
Due (from) to affiliated companies	(531)	1,131
Total accounts payable and accrued expenses	$ 94,436	$ 120,810

Financial Instruments and Fai_3

Financial Instruments and Fair Values - Narrative (Details) - USD ($)	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Aug. 22, 2022	May 31, 2022	Dec. 31, 2021
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Interest rate swaps liability	$ 0		$ 0				$ (25,308,000)
Revolving Credit Facility | Term Loans
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Percentage of debt bearing fixed interest					100%
Designated as hedging instrument | Cash flow hedging
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Net loss to be reclassified into interest expense within the next 12 months			3,300,000
Interest rate swap
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate notional value						$ 390,000,000
Notional amount of expiring derivatives						$ 265,000,000
Interest rate swap | Designated as hedging instrument | Cash flow hedging
Fair Value, Assets and Liabilities Measured on Recurring and Nonrecurring Basis [Line Items]
Aggregate notional value	576,300,000		576,300,000				451,300,000
Interest rate swaps included in prepaid expenses and other assets	18,500,000		18,500,000
Interest rate swaps liability							$ (25,300,000)
Net unrealized gain	$ 21,000,000	$ 2,800,000	$ 46,800,000	$ 8,500,000

Financial Instruments and Fai_4

Financial Instruments and Fair Values - Summary of the Terms of Agreements and the Fair Value of Derivative Financial Instruments (Details) - Designated as hedging instrument - Cash flow hedging - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Derivatives, Fair Value [Line Items]
Asset	$ 18,515	$ 13
Liability	0	(25,308)
LIBOR | Interest Rate Swap, One Month LIBOR, 2.1485%
Derivatives, Fair Value [Line Items]
Notional Amount	$ 265,000
Pay Rate	2.1485%
Asset	$ 0	0
Liability	0	(3,184)
LIBOR | Interest Rate Swap, One Month LIBOR, 2.5000 %, Swap Number 1
Derivatives, Fair Value [Line Items]
Notional Amount	$ 36,820
Receive Rate (as a percent)	70%
Pay Rate	2.50%
Asset	$ 324	0
Liability	0	(4,527)
LIBOR | Interest Rate Swap, One Month LIBOR, 2.5000 %, Swap Number 2
Derivatives, Fair Value [Line Items]
Notional Amount	$ 103,790
Receive Rate (as a percent)	70%
Pay Rate	2.50%
Asset	$ 324	0
Liability	0	(15,945)
LIBOR | Interest Rate Swap, One Month LIBOR, 1.7570%, Interest Swap
Derivatives, Fair Value [Line Items]
Notional Amount	$ 10,710
Receive Rate (as a percent)	70%
Pay Rate	1.757%
Asset	$ 657	0
Liability		(754)
LIBOR | Interest Rate Swap, One Month LIBOR, 2.2540%
Derivatives, Fair Value [Line Items]
Notional Amount	$ 19,008
Pay Rate	2.254%
Asset	$ 1,143	0
Liability	0	(898)
LIBOR | Interest Rate Cap, One Month LIBOR, 4.5000%
Derivatives, Fair Value [Line Items]
Notional Amount	$ 6,780
Receive Rate (as a percent)	70%
Pay Rate	4.50%
Asset	$ 16	5
Liability	0	0
LIBOR | Interest Rate Cap, One Month LIBOR, 5.5000%
Derivatives, Fair Value [Line Items]
Notional Amount	$ 9,188
Pay Rate	5.50%
Asset	$ 43	8
Liability	0	0
SOFR | Interest Rate Swap, SOFR Compound, 2.5620%
Derivatives, Fair Value [Line Items]
Notional Amount	$ 175,000
Pay Rate	2.562%
Asset	$ 8,713	0
Liability	0	0
SOFR | Interest Rate Swap, SOFR Compound, 2.6260%
Derivatives, Fair Value [Line Items]
Notional Amount	$ 107,500
Pay Rate	2.626%
Asset	$ 3,649	0
Liability	0	0
SOFR | Interest Rate Swap, SOFR OIS Compound, 2.6280%
Derivatives, Fair Value [Line Items]
Notional Amount	$ 107,500
Pay Rate	2.628%
Asset	$ 3,646	0
Liability	$ 0	$ 0

Financial Instruments and Fai_5

Financial Instruments and Fair Values - Effect of Derivative Financial Instruments Designated as Cash Flow Hedges (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income (loss)	$ 19,588	$ (103)	$ 39,407	$ (139)
Amount of loss reclassified from accumulated other comprehensive income ( loss) into interest expense	(1,392)	(2,920)	(7,428)	(8,687)
Interest expense	(25,516)	(23,577)	(75,572)	(70,553)
Interest rate swap
Derivative Instruments, Gain (Loss) [Line Items]
Amount of gain (loss) recognized in other comprehensive income (loss)	19,588	(103)	39,407	(139)
Amount of loss reclassified from accumulated other comprehensive income ( loss) into interest expense	(1,392)	(2,920)	(7,428)	(8,687)
Interest rate swap | Reclassification out of accumulated other comprehensive income | Accumulated other comprehensive income (loss)
Derivative Instruments, Gain (Loss) [Line Items]
Interest expense	$ (1,392)	$ (2,920)	$ (7,428)	$ (8,687)

Financial Instruments and Fai_6

Financial Instruments and Fair Values - Summary of the Carrying and Estimated Fair Values of Financial Instruments (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swap included in accounts payable and accrued expenses	$ 0	$ 25,308
Carrying Value | Mortgage notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	915,202	948,769
Carrying Value | Senior notes | Senior unsecured notes - Series A, B, C, D, E, F, G and H
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	973,607	973,373
Carrying Value | Revolving credit facility | Unsecured term loan facilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	388,645	388,223
Carrying Value | Interest rate swap
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps included in prepaid expenses and other assets	18,457
Interest rate swap included in accounts payable and accrued expenses		25,308
Estimated Fair Value | Mortgage notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	809,720	960,933
Estimated Fair Value | Senior notes | Senior unsecured notes - Series A, B, C, D, E, F, G and H
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	862,768	994,389
Estimated Fair Value | Revolving credit facility | Unsecured term loan facilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	390,000	390,000
Estimated Fair Value | Level 1 | Mortgage notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	0	0
Estimated Fair Value | Level 1 | Senior notes | Senior unsecured notes - Series A, B, C, D, E, F, G and H
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	0	0
Estimated Fair Value | Level 1 | Revolving credit facility | Unsecured term loan facilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	0	0
Estimated Fair Value | Level 2 | Mortgage notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	0	0
Estimated Fair Value | Level 2 | Senior notes | Senior unsecured notes - Series A, B, C, D, E, F, G and H
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	0	0
Estimated Fair Value | Level 2 | Revolving credit facility | Unsecured term loan facilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	0	0
Estimated Fair Value | Level 3 | Mortgage notes payable
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	809,720	960,933
Estimated Fair Value | Level 3 | Senior notes | Senior unsecured notes - Series A, B, C, D, E, F, G and H
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	862,768	994,389
Estimated Fair Value | Level 3 | Revolving credit facility | Unsecured term loan facilities
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Long-term debt, fair value	390,000	390,000
Estimated Fair Value | Interest rate swap
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps included in prepaid expenses and other assets	18,457
Interest rate swap included in accounts payable and accrued expenses		25,308
Estimated Fair Value | Interest rate swap | Level 1
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps included in prepaid expenses and other assets	0
Interest rate swap included in accounts payable and accrued expenses		0
Estimated Fair Value | Interest rate swap | Level 2
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps included in prepaid expenses and other assets	18,457
Interest rate swap included in accounts payable and accrued expenses		25,308
Estimated Fair Value | Interest rate swap | Level 3
Fair Value, Balance Sheet Grouping, Financial Statement Captions [Line Items]
Interest rate swaps included in prepaid expenses and other assets	$ 0
Interest rate swap included in accounts payable and accrued expenses		$ 0

Leases - Narrative (Details)

Leases - Narrative (Details) $ in Thousands	Sep. 30, 2022 USD ($) property	Dec. 31, 2021 USD ($)
Operating Leases [Line Items]
Number of properties subject to ground leases | property	3
Right-of-use assets	$ 28,725	$ 28,892
Lease liabilities	$ 28,725	$ 28,892
Weighted average discount rate (as a percent)	4.50%
Weighted average remaining lease term (in years)	47 years 8 months 12 days
Minimum
Operating Leases [Line Items]
Term of lease (in years)	1 year
Maximum
Operating Leases [Line Items]
Term of lease (in years)	21 years

Leases - Components of Rental R

Leases - Components of Rental Revenue (Details) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Leases [Abstract]
Fixed payments	$ 131,800	$ 124,764	$ 399,995	$ 374,968
Variable payments	16,490	14,794	45,148	45,618
Total rental revenue	$ 148,290	$ 139,558	$ 445,143	$ 420,586

Leases - Future Contractual Min

Leases - Future Contractual Minimum Lease Payments On Non-Cancellable Operating Leases To Be Received (Details) $ in Thousands	Sep. 30, 2022 USD ($)
Leases [Abstract]
Remainder of 2022	$ 120,126
2023	487,764
2024	480,189
2025	448,981
2026	407,826
Thereafter	1,934,341
Total future minimum lease payments on non-cancellable operating leases to be received	$ 3,879,227

Leases - Future Minimum Lease P

Leases - Future Minimum Lease Payments on Ground Leases (Details) - USD ($) $ in Thousands	Sep. 30, 2022	Dec. 31, 2021
Leases [Abstract]
Remainder of 2022	$ 380
2023	1,518
2024	1,518
2025	1,518
2026	1,518
Thereafter	63,744
Total undiscounted cash flows	70,196
Present value discount	(41,471)
Ground lease liabilities	$ 28,725	$ 28,892

Commitments and Contingencies -

Commitments and Contingencies - Legal Proceedings (Details) - New york state supreme court, new york county $ in Millions		1 Months Ended
	Aug. 26, 2020 USD ($)	Oct. 31, 2014 participant
Loss Contingencies [Line Items]
Number of plaintiffs opting out of settlement (participant) | participant		12
Amount awarded to claimants | $	$ 1.2
Interest period (in years)	7 years

Commitments and Contingencies_2

Commitments and Contingencies - Unfunded Capital Expenditures (Details) $ in Millions	Sep. 30, 2022 USD ($)
Commitments and Contingencies Disclosure [Abstract]
Estimated capital expenditures to be incurred	$ 117.9

Capital - Additional Informatio

Capital - Additional Information and Private Perpetual Preferred Units (Details)	9 Months Ended
	Sep. 30, 2022 USD ($) shares	May 16, 2019 shares
Shares and Units [Abstract]
LTIP unit, share of stock equivalent (in shares)	1
Conversion rate tor LTIP units to OP units	1
Dividends on common stock received until performance criteria met for LTIP units (as a percent)	10%
Dividends on common stock received after performance criteria met for LTIP units (as a percent)	90%
Dividends on common stock received in periods after performance criteria met for LTIP units (as a percent)	100%
Stock repurchase authorized amount | $	$ 500,000,000
2019 Plan
Shares and Units [Abstract]
Number of shares authorized under the plan (in shares)	11,000,000	11,000,000
Other partners, certain directors, officers and other members of executive management
Shares and Units [Abstract]
OP units not owned by the Company (in shares)	110,959,627
Other partners, certain directors, officers and other members of executive management | Empire state realty OP
Shares and Units [Abstract]
OP units not owned by the Company (as a percent)	40.70%
Empire state realty trust
Shares and Units [Abstract]
OP units owned by the Company (in shares)	161,569,374
Empire state realty trust | Empire state realty OP
Shares and Units [Abstract]
OP units owned by the company (as a percent)	59.30%
Common Class A
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock outstanding (in shares)	160,576,042
Common Class B
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Common stock outstanding (in shares)	993,332

Capital - Equity Securities Rep

Capital - Equity Securities Repurchased (Details) - USD ($) $ / shares in Units, $ in Thousands	1 Months Ended
	Sep. 30, 2022	Aug. 31, 2022	Jul. 31, 2022
Equity [Abstract]
Total Number of Shares Purchased (in shares)	1,761,561	621,314	184,045
Weighted Average Price Paid per Share (in usd per share)	$ 6.97	$ 7.32	$ 6.92
Maximum Approximate Dollar Value Available for Future Purchase	$ 417,455	$ 429,736	$ 434,286

Capital - Private Perpetual Pre

Capital - Private Perpetual Preferred Units (Details) - $ / shares	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Preferred Units [Line Items]
Dividends declared (in USD per share)	$ 0.035	$ 0.035	$ 0.105	$ 0.070
Private perpetual preferred units, series 2019
Preferred Units [Line Items]
Private perpetual preferred units, issued (in shares)	4,664,038		4,664,038		4,664,000
Private perpetual preferred units, liquidation preference (in USD per share)	$ 13.52		$ 13.52		$ 13.52
Preferred units cumulative cash distributions (in USD per share)	$ 0.70		$ 0.70
Private perpetual preferred units, series 2014
Preferred Units [Line Items]
Private perpetual preferred units, issued (in shares)	1,560,000		1,560,000		1,560,000
Private perpetual preferred units issued during period (in shares)			1,560,360
Private perpetual preferred units, liquidation preference (in USD per share)	$ 16.62		$ 16.62		$ 16.62
Dividends declared (in USD per share)			$ 0.60

Capital - Distributions (Detail

Capital - Distributions (Details) - USD ($) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Equity [Abstract]
Distributions paid to OP unitholders	$ 9.6	$ 10	$ 29.1	$ 19.4
Distributions paid to preferred unitholders	$ 1.1	$ 1.1	$ 3.2	$ 3.2

Capital - Incentive and Share-b

Capital - Incentive and Share-based Compensation (Details) - USD ($) $ / shares in Units, $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	May 16, 2019
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted-average per unit or share fair value (in USD per share)			$ 7.21
Performance period (in years)			10 years
Granted In 2020 And After
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Retirement age (in years)			65 years
Granted Before 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Retirement age (in years)			60 years
Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Age of grantee at which LTIP unit and restricted stock awards immediately vest (in years)			60 years
Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Age of grantee at which LTIP unit and restricted stock awards immediately vest (in years)			65 years
Awards that meet age and service requirements for vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Noncash share-based compensation expense recognized	$ 0.4	$ 0.7	$ 2	$ 2.1
Unrecognized compensation expense	1.2		$ 1.2
Unrecognized compensation expense, period for recognition (in years)			3 years 3 months 18 days
Awards that do not meet age and service requirements for vesting
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Noncash share-based compensation expense recognized	4.8	$ 4.7	$ 13.7	$ 13.3
Unrecognized compensation expense	$ 30.7		$ 30.7
Unrecognized compensation expense, period for recognition (in years)			2 years 7 months 6 days
Long-term incentive plan units and restricted stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Fair value of share-based awards granted in period			$ 22.4
Weighted-average per unit or share fair value (in USD per share)			$ 7.21
Dividend rate (as a percent)			2%
Risk free interest rate, minimum (as a percent)			1.40%
Risk free interest rate, maximum (as a percent)			2%
Expected price volatility, minimum (as a percent)			37%
Expected price volatility, maximum (as a percent)			53%
Long-term incentive plan units and restricted stock | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)			2 years
Long-term incentive plan units and restricted stock | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expected term (in years)			5 years 3 months 18 days
Time-based LTIPs
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Threshold of continuous service for retirement eligibility (in years)			10 years
Time-based LTIPs | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)			3 years
Time-based LTIPs | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)			5 years
Time-based LTIPs | Median
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)			4 years
Market-based LTIPs | Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)			3 years
Market-based LTIPs | Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Award vesting period (in years)			4 years
2019 Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares authorized under the plan (in shares)	11,000,000		11,000,000		11,000,000
Number of shares that remain available for future issuance (in shares)	5,900,000		5,900,000

Capital - Summary of ESRT Restr

Capital - Summary of ESRT Restricted Stock and LTIP Unit Activity (Details)	9 Months Ended
	Sep. 30, 2022 $ / shares shares
Weighted Average Grant Fair Value
Beginning balance, Unvested (in USD per share) | $ / shares	$ 7.02
Vested (in USD per share) | $ / shares	9.95
Granted (in USD per share) | $ / shares	7.21
Forfeited or unearned (in USD per share) | $ / shares	7.21
Ending balance, Unvested (in USD per share) | $ / shares	$ 6.67
Restricted Stock
Restricted Stock and LTIP Units
Beginning balance, Unvested (in shares)	214,408
Vested (in shares)	(68,867)
Granted (in shares)	232,448
Forfeited or unearned (in shares)	(17,830)
Ending balance, Unvested (in shares)	360,159
Time-based LTIPs
Restricted Stock and LTIP Units
Beginning balance, Unvested (in shares)	2,499,592
Vested (in shares)	(1,052,119)
Granted (in shares)	1,514,434
Forfeited or unearned (in shares)	0
Ending balance, Unvested (in shares)	2,961,907
Market-based LTIPs
Restricted Stock and LTIP Units
Beginning balance, Unvested (in shares)	5,039,134
Vested (in shares)	0
Granted (in shares)	780,155
Forfeited or unearned (in shares)	(1,311,839)
Ending balance, Unvested (in shares)	4,507,450
Performance-based LTIPs
Restricted Stock and LTIP Units
Beginning balance, Unvested (in shares)	0
Vested (in shares)	0
Granted (in shares)	578,943
Forfeited or unearned (in shares)	0
Ending balance, Unvested (in shares)	578,943

Capital - Earnings Per Unit (De

Capital - Earnings Per Unit (Details) - USD ($) $ / shares in Units, $ in Thousands	3 Months Ended		9 Months Ended
	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021
Numerator:
Net income (loss)	$ 10,118	$ (10,183)	$ 41,592	$ (8,963)
Private perpetual preferred unit distributions	(1,050)	(1,050)	(3,151)	(3,151)
Net loss attributable to non-controlling interests in other partnerships	49	0	271	0
Earnings allocated to unvested shares - basic	0	(114)	0	(227)
Earnings allocated to unvested shares - diluted	0	(114)	0	(227)
Net income (loss) attributable to common unitholders - basic	9,117	(11,347)	38,712	(12,341)
Net income (loss) attributable to common unitholders - diluted	$ 9,117	$ (11,347)	$ 38,712	$ (12,341)
Denominator:
Weighted average units outstanding - basic (in shares)	266,035,000	277,716,000	269,880,000	277,829,000
Effect of dilutive securities:
Stock-based compensation plans (in share)	1,086,000	0	1,086,000	0
Weighted average units outstanding - diluted (in shares)	267,121,000	277,716,000	270,966,000	277,829,000
Earnings per share:
Basic (in USD per share)	$ 0.03	$ (0.04)	$ 0.14	$ (0.04)
Diluted (in USD per share)	$ 0.03	$ (0.04)	$ 0.14	$ (0.04)
Antidilutive securities (in shares)	0	1,084,000	0	998,000

Related Party Transactions (Det

Related Party Transactions (Details) $ in Millions	3 Months Ended		9 Months Ended
	Sep. 30, 2022 USD ($) ft² property	Sep. 30, 2021 USD ($)	Sep. 30, 2022 USD ($) ft² property	Sep. 30, 2021 USD ($)
Related Party Transaction [Line Items]
Area of real estate property (in square feet) | ft²	9,900,000		9,900,000
Affliliated entity | Supervisory fee revenue
Related Party Transaction [Line Items]
Revenue from related parties	$ 0.2	$ 0.3	$ 0.8	$ 0.8
Affliliated entity | Property management fee revenue
Related Party Transaction [Line Items]
Revenue from related parties	0.1	0.1	0.2	0.2
Affliliated entity | Leased space rental
Related Party Transaction [Line Items]
Revenue from related parties	$ 0.1	$ 0.1	$ 0.2	$ 0.2
Number of properties | property	1		1
Lease cancellation, notice period (in days)			90 days
Undivided Interest
Related Party Transaction [Line Items]
Area of real estate property (in square feet) | ft²	5,447		5,447
Chairman emeritus | Leased space rental
Related Party Transaction [Line Items]
Percentage of lease space occupied by Chairman emeritus and employee			15%

Segment Reporting - Narrative (

Segment Reporting - Narrative (Details)	9 Months Ended
	Sep. 30, 2022 segment
Segment Reporting [Abstract]
Number of reportable segments	2

Segment Reporting - Components

Segment Reporting - Components of Segment Net Income (Loss) for Each Segment (Details) - USD ($) $ in Thousands	1 Months Ended	3 Months Ended		9 Months Ended
	Apr. 30, 2022	Sep. 30, 2022	Sep. 30, 2021	Sep. 30, 2022	Sep. 30, 2021	Dec. 31, 2021
Revenues:
Rental revenue		$ 148,290	$ 139,558	$ 445,143	$ 420,586
Intercompany rental revenue		0	0	0	0
Observatory revenue		33,051	12,796	73,660	23,758
Lease termination fees		0	11,321	20,032	15,949
Third-party management and other fees		389	314	1,025	917
Other revenue and fees		1,982	1,059	5,908	2,550
Total revenues		183,712	165,048	545,768	463,760
Operating expenses:
Property operating expenses		42,798	33,357	118,875	92,429
Intercompany rent expense		0	0	0	0
Ground rent expense		2,331	2,331	6,994	6,994
General and administrative expenses		15,725	14,427	45,287	42,369
Observatory expenses		8,516	6,370	22,507	16,226
Real estate taxes		31,831	29,566	91,637	92,367
Depreciation and amortization		46,984	65,794	172,394	155,339
Total operating expenses		148,185	151,845	457,694	405,724
Total operating income (loss)		35,527	13,203	88,074	58,036
Other income (expense):
Interest income		1,564	211	2,144	497
Interest expense		(25,516)	(23,577)	(75,572)	(70,553)
Loss on early extinguishment of debt		0	0	0	(214)
Gain on disposition of property	$ 27,200	0	0	27,170	0
Income (loss) before income taxes		11,575	(10,163)	41,816	(12,234)
Income tax (expense) benefit		(1,457)	(20)	(224)	3,271
Net income (loss)		10,118	(10,183)	41,592	(8,963)
Segment assets		4,201,140	4,112,163	4,201,140	4,112,163	$ 4,282,447
Expenditures for segment assets		18,710	21,349	71,110	64,659
Intersegment Elimination
Revenues:
Rental revenue		0	0	0	0
Intercompany rental revenue		(19,072)	(5,310)	(46,801)	(16,271)
Observatory revenue		0	0	0	0
Lease termination fees		0	0	0	0
Third-party management and other fees		0	0	0	0
Other revenue and fees		0	0	0	0
Total revenues		(19,072)	(5,310)	(46,801)	(16,271)
Operating expenses:
Property operating expenses		0	0	0	0
Intercompany rent expense		(19,072)	(5,310)	(46,801)	(16,271)
Ground rent expense		0	0	0	0
General and administrative expenses		0	0	0	0
Observatory expenses		0	0	0	0
Real estate taxes		0	0	0	0
Depreciation and amortization		0	0	0	0
Total operating expenses		(19,072)	(5,310)	(46,801)	(16,271)
Total operating income (loss)		0	0	0	0
Other income (expense):
Interest income		0	0	0	0
Interest expense		0	0	0	0
Loss on early extinguishment of debt					0
Gain on disposition of property		0		0
Income (loss) before income taxes		0	0	0	0
Income tax (expense) benefit		0	0	0	0
Net income (loss)		0	0	0	0
Segment assets		0	0	0	0
Expenditures for segment assets		0	0	0	0
Real Estate | Operating segments
Revenues:
Rental revenue		148,290	139,558	445,143	420,586
Intercompany rental revenue		19,072	5,310	46,801	16,271
Observatory revenue		0	0	0	0
Lease termination fees		0	11,321	20,032	15,949
Third-party management and other fees		389	314	1,025	917
Other revenue and fees		1,982	921	5,908	2,412
Total revenues		169,733	157,424	518,909	456,135
Operating expenses:
Property operating expenses		42,798	33,357	118,875	92,429
Intercompany rent expense		0	0	0	0
Ground rent expense		2,331	2,331	6,994	6,994
General and administrative expenses		15,725	14,427	45,287	42,369
Observatory expenses		0	0	0	0
Real estate taxes		31,831	29,566	91,637	92,367
Depreciation and amortization		46,933	65,759	172,258	155,244
Total operating expenses		139,618	145,440	435,051	389,403
Total operating income (loss)		30,115	11,984	83,858	66,732
Other income (expense):
Interest income		1,530	211	2,105	494
Interest expense		(25,516)	(23,577)	(75,572)	(70,553)
Loss on early extinguishment of debt					(214)
Gain on disposition of property		0		27,170
Income (loss) before income taxes		6,129	(11,382)	37,561	(3,541)
Income tax (expense) benefit		(359)	53	(541)	(365)
Net income (loss)		5,770	(11,329)	37,020	(3,906)
Segment assets		3,950,883	3,870,142	3,950,883	3,870,142
Expenditures for segment assets		18,686	21,349	70,795	64,655
Observatory | Operating segments
Revenues:
Rental revenue		0	0	0	0
Intercompany rental revenue		0	0	0	0
Observatory revenue		33,051	12,796	73,660	23,758
Lease termination fees		0	0	0	0
Third-party management and other fees		0	0	0	0
Other revenue and fees		0	138	0	138
Total revenues		33,051	12,934	73,660	23,896
Operating expenses:
Property operating expenses		0	0	0	0
Intercompany rent expense		19,072	5,310	46,801	16,271
Ground rent expense		0	0	0	0
General and administrative expenses		0	0	0	0
Observatory expenses		8,516	6,370	22,507	16,226
Real estate taxes		0	0	0	0
Depreciation and amortization		51	35	136	95
Total operating expenses		27,639	11,715	69,444	32,592
Total operating income (loss)		5,412	1,219	4,216	(8,696)
Other income (expense):
Interest income		34	0	39	3
Interest expense		0	0	0	0
Loss on early extinguishment of debt					0
Gain on disposition of property		0		0
Income (loss) before income taxes		5,446	1,219	4,255	(8,693)
Income tax (expense) benefit		(1,098)	(73)	317	3,636
Net income (loss)		4,348	1,146	4,572	(5,057)
Segment assets		250,257	242,021	250,257	242,021
Expenditures for segment assets		$ 24	$ 0	$ 315	$ 4