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Operating Segments - Additional Information (Detail)	Mar. 31, 2012 Entity
Segment Reporting Information [Line Items]
Number of operating business segments	2

X

- Definition

Number of Operating Segments

+ References

No definition available.

+ Details

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

X

- Details

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