The Business (Details)	12 Months Ended
Dec. 31, 2012 segment VNOC_facility POP_location
Number of operating segments	1
Number of VNOCs	4
Number of POPs	3
Minimum [Member]
Number of different enterprises to which the company delivers service	600
Number of countries in which the company operates	68
Network bandwidth (in megabytes per second)	1.5
Maximum [Member]
Network bandwidth (in megabytes per second)	1,024
United States [Member]
Number of POPs	2
United Kingdom [Member]
Number of POPs	1

Number of operating segments. An operating segment is a component of an enterprise: (a) that engages in business activities from which it may earn revenues and incur expenses (including revenues and expenses relating to transactions with other components of the same enterprise), (b) whose operating results are regularly reviewed by the enterprise's chief operating decision maker to make decisions about resources to be allocated to the segment and assess its performance, and (c) for which discrete financial information is available. An operating segment may engage in business activities for which it has yet to earn revenues, for example, start-up operations may be operating segments before earning revenues.

No definition available.

Name:	us-gaap_NumberOfOperatingSegments
Namespace Prefix:	us-gaap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	duration