Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Jun. 30, 2019	Dec. 31, 2018
Commercial real estate properties, at cost:
Land	$ 201,196	$ 201,196
Development costs	7,987	7,987
Building and improvements	2,784,472	2,675,303
Commercial real estate properties, at cost, gross	2,993,655	2,884,486
Less: accumulated depreciation	(809,197)	(747,304)
Commercial real estate properties, net	2,184,458	2,137,182
Cash and cash equivalents	375,335	204,981
Restricted cash	38,043	65,832
Short-term investments	150,000	400,000
Tenant and other receivables, net of allowance of $488 as of December 31, 2018	31,264	29,437
Deferred rent receivables, net of allowance of $19 as of December 31, 2018	209,510	200,903
Prepaid expenses and other assets	60,818	64,345
Deferred costs, net	228,782	241,223
Acquired below-market ground leases, net	356,482	360,398
Right of use assets	29,404
Goodwill	491,479	491,479
Total assets	4,155,575	4,195,780
Liabilities:
Mortgage notes payable, net	607,072	608,567
Senior unsecured notes, net	1,047,939	1,046,219
Unsecured term loan facility, net	264,394	264,147
Unsecured revolving credit facility	0	0
Accounts payable and accrued expenses	131,842	130,676
Acquired below-market leases, net	45,651	52,450
Ground lease liabilities	29,404
Deferred revenue and other liabilities	48,858	44,810
Tenants’ security deposits	32,383	57,802
Total liabilities	2,207,543	2,204,671
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	1,213,170	1,204,075
Accumulated other comprehensive loss	(20,387)	(8,853)
Retained earnings	21,084	41,511
Total Empire State Realty Trust, Inc.'s stockholders' equity	1,215,647	1,238,482
Non-controlling interests in operating partnership	724,381	744,623
Private perpetual preferred units, $16.62 per unit liquidation preference, 1,560,360 issued and outstanding in 2019 and 2018	8,004	8,004
Total equity	1,948,032	1,991,109
Total liabilities and equity	4,155,575	4,195,780
Class A Common Stock
Empire State Realty Trust, Inc. stockholders' equity:
Common stock	1,770	1,739
Class B Common Stock
Empire State Realty Trust, Inc. stockholders' equity:
Common stock	$ 10	$ 10