Consolidated Balance Sheets - USD ($) $ in Thousands	Dec. 31, 2018	Dec. 31, 2017
Commercial real estate properties, at cost:
Land	$ 201,196	$ 201,196
Development costs	7,987	7,986
Building and improvements	2,675,303	2,458,473
Commercial real estate properties, at cost, gross	2,884,486	2,667,655
Less: accumulated depreciation	(747,304)	(656,900)
Commercial real estate properties, net	2,137,182	2,010,755
Cash and cash equivalents	204,981	464,344
Restricted cash	65,832	65,853
Short-term investments	400,000	0
Tenant and other receivables, net of allowance of $488 and $1,422 in 2018 and 2017, respectively	29,437	28,329
Deferred rent receivables, net of allowance of $19 and $185 in 2018 and 2017, respectively	200,903	178,629
Prepaid expenses and other assets	64,345	61,028
Deferred costs, net	241,223	262,701
Acquired below market ground leases, net	360,398	368,229
Goodwill	491,479	491,479
Total assets	4,195,780	3,931,347
Liabilities:
Mortgage notes payable, net	608,567	717,164
Senior unsecured notes, net	1,046,219	707,895
Unsecured term loan facility, net	264,147	263,662
Unsecured revolving credit facility	0	0
Accounts payable and accrued expenses	130,676	110,849
Acquired below market leases, net	52,450	66,047
Deferred revenue and other liabilities	44,810	40,907
Tenants’ security deposits	57,802	47,086
Total liabilities	2,204,671	1,953,610
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	1,204,075	1,128,460
Accumulated other comprehensive loss	(8,853)	(8,555)
Retained earnings	41,511	46,762
Total Empire State Realty Trust, Inc.'s stockholders' equity	1,238,482	1,168,282
Non-controlling interests in operating partnership	744,623	801,451
Private perpetual preferred units, $16.62 per unit liquidation preference, 1,560,360 issued and outstanding in 2018 and 2017	8,004	8,004
Total equity	1,991,109	1,977,737
Total liabilities and equity	4,195,780	3,931,347
Class A Common Stock
Empire State Realty Trust, Inc. stockholders' equity:
Common stock	1,739	1,604
Class B Common Stock
Empire State Realty Trust, Inc. stockholders' equity:
Common stock	$ 10	$ 11