Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Mar. 31, 2019	Dec. 31, 2018
Commercial real estate properties, at cost:
Land	$ 201,196	$ 201,196
Development costs	7,987	7,987
Building and improvements	2,727,497	2,675,303
Commercial real estate properties, at cost, gross	2,936,680	2,884,486
Less: accumulated depreciation	(777,794)	(747,304)
Commercial real estate properties, net	2,158,886	2,137,182
Cash and cash equivalents	242,910	204,981
Restricted cash	61,766	65,832
Short-term investments	350,000	400,000
Tenant and other receivables, net of allowance of $488 as of December 31, 2018	22,052	29,437
Deferred rent receivables, net of allowance $19 as of December 31, 2018	206,307	200,903
Prepaid expenses and other assets	37,766	64,345
Deferred costs, net	233,382	241,223
Acquired below-market ground leases, net	358,440	360,398
Right of use assets	29,452
Goodwill	491,479	491,479
Total assets	4,192,440	4,195,780
Liabilities:
Mortgage notes payable, net	607,823	608,567
Senior unsecured notes, net	1,047,078	1,046,219
Unsecured term loan facility, net	264,271	264,147
Unsecured revolving credit facility	0	0
Accounts payable and accrued expenses	127,986	130,676
Acquired below-market leases, net	48,731	52,450
Ground lease liabilities	29,452
Deferred revenue and other liabilities	43,339	44,810
Tenants’ security deposits	56,559	57,802
Total liabilities	2,225,239	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	1,207,386	1,204,075
Accumulated other comprehensive loss	(13,130)	(8,853)
Retained earnings	28,668	41,511
Total Empire State Realty Trust, Inc.'s stockholders' equity	1,224,689	1,238,482
Non-controlling interests in operating partnership	734,508	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	1,967,201	1,991,109
Total liabilities and equity	4,192,440	4,195,780
Class A Common Stock
Empire State Realty Trust, Inc. stockholders' equity:
Common stock	1,755	1,739
Class B Common Stock
Empire State Realty Trust, Inc. stockholders' equity:
Common stock	$ 10	$ 10