GOODWILL AND OTHER INTANGIBLE ASSETS - Schedule of Re-allocations of Goodwill (Details) $ in Thousands	9 Months Ended
Sep. 30, 2018 USD ($)
Operating segments:
Goodwill, beginning of period	$ 50,209
Re-allocations	0
SingleHop Acquisition	66,496
Goodwill, end of period	116,705
INAP COLO
Operating segments:
Goodwill, beginning of period	6,003
Re-allocations	(6,003)
SingleHop Acquisition	0
Goodwill, end of period	0
INAP CLOUD
Operating segments:
Goodwill, beginning of period	44,206
Re-allocations	(44,206)
SingleHop Acquisition	0
Goodwill, end of period	0
INAP US
Operating segments:
Goodwill, beginning of period	0
Re-allocations	28,304
SingleHop Acquisition	66,496
Goodwill, end of period	94,800
INAP INTL
Operating segments:
Goodwill, beginning of period	0
Re-allocations	21,905
SingleHop Acquisition	0
Goodwill, end of period	$ 21,905

Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
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- Definition

Amount of increase in asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized resulting from a business combination.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
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-Topic 350
-SubTopic 20
-Section 50
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- Definition

A roll forward is a reconciliation of a concept from the beginning of a period to the end of a period.

+ References

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- Definition

Amount of transfers into (out of) an asset representing the future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Publisher FASB
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-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
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