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GOODWILL AND OTHER INTANGIBLE ASSETS (Details)	Sep. 30, 2012 Segments
Goodwill and Intangible Assets Disclosure [Abstract]
Number of reporting units	3

X

- Definition

The number of the reporting units.

+ References

No definition available.

+ Details

Name:	inap_NumberOfReportingUnits
Namespace Prefix:	inap_
Data Type:	xbrli:integerItemType
Balance Type:	na
Period Type:	instant

X

- Details

Name:	us-gaap_GoodwillAndIntangibleAssetsDisclosureAbstract
Namespace Prefix:	us-gaap_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration