CONSOLIDATED BALANCE SHEETS - USD ($) $ in Thousands	Jun. 30, 2018	Dec. 31, 2017
Current Assets:
Cash and cash equivalents	$ 188,192	$ 925,699
Accounts receivable (less allowances of $46,648 and $48,727 as of December 31, 2017 and June 30, 2018, respectively)	867,041	835,742
Prepaid expenses and other	189,101	188,874
Total Current Assets	1,244,334	1,950,315
Property, Plant and Equipment:
Property, plant and equipment	7,383,554	6,251,100
Less—Accumulated depreciation	(2,977,067)	(2,833,421)
Property, Plant and Equipment, Net	4,406,487	3,417,679
Other Assets, Net:
Goodwill	4,466,634	4,070,267
Customer relationships, customer inducements and data center lease-based intangibles	1,530,549	1,400,547
Other	164,530	133,594
Total Other Assets, Net	6,161,713	5,604,408
Total Assets	11,812,534	10,972,402
Current Liabilities:
Current portion of long-term debt	123,818	146,300
Accounts payable	293,293	289,137
Accrued expenses	599,811	653,146
Deferred revenue	256,181	241,590
Total Current Liabilities	1,273,103	1,330,173
Long-term Debt, net of current portion	7,961,761	6,896,971
Other Long-term Liabilities	119,095	73,039
Deferred Rent	120,952	126,231
Deferred Income Taxes	184,836	155,728
Commitments and Contingencies (see Note 8)
Redeemable Noncontrolling Interest	95,340	91,418
Iron Mountain Incorporated Stockholders' Equity:
Preferred stock (par value $0.01; authorized 10,000,000 shares; none issued and outstanding)	0	0
Common stock (par value $0.01; authorized 400,000,000 shares; issued and outstanding 283,110,183 shares and 286,099,227 shares as of December 31, 2017 and June 30, 2018, respectively)	2,861	2,831
Additional paid-in capital	4,256,894	4,164,562
(Distributions in excess of earnings) Earnings in excess of distributions	(1,996,365)	(1,765,966)
Accumulated other comprehensive items, net	(207,450)	(103,989)
Total Iron Mountain Incorporated Stockholders' Equity	2,055,940	2,297,438
Noncontrolling Interests	1,507	1,404
Total Equity	2,057,447	2,298,842
Total Liabilities and Equity	$ 11,812,534	$ 10,972,402