Condensed Consolidated Balance Sheets - USD ($) $ in Thousands	Sep. 30, 2016	Dec. 31, 2015
Commercial real estate properties, at cost:
Land	$ 201,196	$ 201,196
Development costs	7,946	7,498
Building and improvements	2,196,864	2,067,636
Commercial real estate properties, at cost, gross	2,406,006	2,276,330
Less: accumulated depreciation	(532,406)	(465,584)
Commercial real estate properties, net	1,873,600	1,810,746
Cash and cash equivalents	594,297	46,685
Restricted cash	60,752	65,880
Tenant and other receivables, net of allowance of $4,242 and $2,792 in 2016 and 2015, respectively	19,569	18,782
Deferred rent receivables, net of allowance of $228 and $245 in 2016 and 2015, respectively	143,578	122,048
Prepaid expenses and other assets	33,685	50,460
Deferred costs, net	287,591	310,679
Acquired below-market ground leases, net	378,018	383,891
Goodwill	491,479	491,479
Total assets	3,882,569	3,300,650
Liabilities:
Mortgage notes payable, net	763,457	747,661
Senior unsecured notes, net	589,546	587,018
Unsecured term loan facility, net	262,830	262,545
Unsecured revolving credit facility, net	0	35,192
Accounts payable and accrued expenses	154,573	111,099
Acquired below-market leases, net	87,708	104,171
Deferred revenue and other liabilities	24,176	31,388
Tenants’ security deposits	47,440	48,890
Total liabilities	1,929,730	1,927,964
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	1,100,706	469,152
Accumulated other comprehensive loss	(14,956)	(883)
Retained earnings	50,259	55,260
Total Empire State Realty Trust, Inc.'s stockholders' equity	1,137,558	524,729
Non-controlling interests in operating partnership	807,277	839,953
Private perpetual preferred units, $16.62 per unit liquidation preference, 1,560,360 issued and outstanding in 2016 and 2015	8,004	8,004
Total equity	1,952,839	1,372,686
Total liabilities and equity	3,882,569	3,300,650
Class A Common Stock
Empire State Realty Trust, Inc. stockholders' equity:
Common stock	1,538	1,189
Class B Common Stock
Empire State Realty Trust, Inc. stockholders' equity:
Common stock	$ 11	$ 11