CONSOLIDATED BALANCE SHEETS (USD $) In Thousands, unless otherwise specified	Jun. 30, 2012	Dec. 31, 2011
Current Assets:
Cash and cash equivalents	$ 170,230	$ 179,845
Restricted cash	36,612	35,110
Accounts receivable (less allowances of $23,277 and $24,318 as of December 31, 2011 and June 30, 2012, respectively)	572,377	543,467
Deferred income taxes	14,446	43,235
Prepaid expenses and other	97,489	105,537
Assets of discontinued operations		7,256
Total Current Assets	891,154	914,450
Property, Plant and Equipment:
Property, plant and equipment	4,255,559	4,232,594
Less-Accumulated depreciation	(1,879,212)	(1,825,511)
Property, Plant and Equipment, net	2,376,347	2,407,083
Other Assets, net:
Goodwill	2,321,810	2,254,268
Customer relationships and acquisition costs	447,197	410,149
Deferred financing costs	32,907	35,798
Other	17,797	19,510
Total Other Assets, net	2,819,711	2,719,725
Total Assets	6,087,212	6,041,258
Current Liabilities:
Current portion of long-term debt	62,837	73,320
Accounts payable	136,666	156,381
Accrued expenses	378,368	418,831
Deferred revenue	202,855	197,181
Liabilities of discontinued operations		3,317
Total Current Liabilities	780,726	849,030
Long-term Debt, net of current portion	3,430,157	3,280,268
Other Long-term Liabilities	61,501	53,169
Deferred Rent	96,440	97,177
Deferred Income Taxes	468,064	507,358
Commitments and Contingencies (see Note 8)
Iron Mountain Incorporated Stockholders' Equity:
Preferred stock (par value $0.01; authorized 10,000,000 shares; none issued and outstanding)
Common stock (par value $0.01; authorized 400,000,000 shares; issued and outstanding 172,140,966 shares and 171,635,277 shares as of December 31, 2011 and June 30, 2012, respectively)	1,716	1,721
Additional paid-in capital	332,369	343,603
Retained earnings	906,811	902,567
Accumulated other comprehensive items, net	(1,285)	(2,203)
Total Iron Mountain Incorporated Stockholders' Equity	1,239,611	1,245,688
Noncontrolling Interests	10,713	8,568
Total Equity	1,250,324	1,254,256
Total Liabilities and Equity	$ 6,087,212	$ 6,041,258