v3.19.3.a.u2

GOODWILL Table - Changes in the Carrying Amount of Goodwill by Segment (Details) - USD ($) $ in Thousands	12 Months Ended
	Dec. 31, 2018	Dec. 31, 2019	Dec. 31, 2017
Goodwill [Roll Forward]
Navigator Acquisition purchase price allocation adjustments (Note 6)	$ (2,814)
Goodwill	1,005,853	$ 1,005,853	$ 1,008,667
Pipeline Segment
Goodwill [Roll Forward]
Navigator Acquisition purchase price allocation adjustments (Note 6)	(2,814)
Goodwill	704,231	704,231	707,045
Storage Segment
Goodwill [Roll Forward]
Navigator Acquisition purchase price allocation adjustments (Note 6)	0
Goodwill	$ 301,622	$ 301,622	$ 301,622

X

- Definition

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.

+ References

Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
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X

- Definition

Amount of increase (decrease) from adjustments after acquisition date under purchase accounting 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://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 805
-SubTopic 10
-Section 25
-Paragraph 16
-URI http://asc.fasb.org/extlink&oid=116868678&loc=d3e961-128460

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-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
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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

No definition available.

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