Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2020	Dec. 31, 2019
Commercial real estate properties, at cost:
Land	$ 201,196	$ 201,196
Development costs	7,966	7,989
Building and improvements	2,924,804	2,900,248
Commercial real estate properties, at cost, gross	3,133,966	3,109,433
Less: accumulated depreciation	(941,612)	(862,534)
Commercial real estate properties, net	2,192,354	2,246,899
Cash and cash equivalents	526,714	233,946
Restricted cash	41,225	37,651
Tenant and other receivables	21,541	25,423
Deferred rent receivables	222,508	220,960
Prepaid expenses and other assets	77,182	65,453
Deferred costs, net	203,853	228,150
Acquired below market ground leases, net	344,735	352,566
Right of use assets	29,104	29,307
Goodwill	491,479	491,479
Total assets	4,150,695	3,931,834
Liabilities:
Mortgage notes payable, net	775,929	605,542
Senior unsecured notes, net	973,159	798,392
Unsecured term loan facilities, net	387,561	264,640
Unsecured revolving credit facility	0	0
Accounts payable and accrued expenses	103,203	143,786
Acquired below market leases, net	31,705	39,679
Ground lease liabilities	29,104	29,307
Deferred revenue and other liabilities	88,319	72,015
Tenants’ security deposits	30,408	30,560
Total liabilities	2,419,388	1,983,921
Commitments and contingencies
Empire State Realty Trust, Inc. stockholders' equity:
Preferred stock, $0.01 par value per share, 50,000,000 shares authorized, none issued or outstanding	0	0
Additional paid-in capital	1,147,527	1,232,433
Accumulated other comprehensive loss	(28,320)	(21,496)
Retained earnings (deficit)	(65,673)	15,764
Total Empire State Realty Trust, Inc.'s stockholders' equity	1,055,249	1,228,520
Non-controlling interests in operating partnership	646,118	690,242
Total equity	1,731,307	1,947,913
Total liabilities and equity	4,150,695	3,931,834
Class A Common Stock
Empire State Realty Trust, Inc. stockholders' equity:
Common stock	1,705	1,809
Class B Common Stock
Empire State Realty Trust, Inc. stockholders' equity:
Common stock	10	10
Private Perpetual Preferred Units, Series 2019
Empire State Realty Trust, Inc. stockholders' equity:
Private perpetual preferred units	21,936	21,147
Private Perpetual Preferred Units, Series 2014
Empire State Realty Trust, Inc. stockholders' equity:
Private perpetual preferred units	$ 8,004	$ 8,004