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Intangible Assets Including Goodwill - Carrying Value of Goodwill By Segment (Details) $ in Thousands	3 Months Ended
	Sep. 30, 2019 USD ($)
Goodwill [Line Items]
Goodwill	$ 93,368
Goodwill [Roll Forward]
Net balance at June 30, 2019	93,368
Translation adjustment	(68)
Net balance at September 30, 2019	93,300
Electrical Infrastructure [Member]
Goodwill [Line Items]
Goodwill	24,830
Goodwill [Roll Forward]
Net balance at June 30, 2019	24,830
Translation adjustment	(13)
Net balance at September 30, 2019	24,817
Oil Gas & Chemical [Member]
Goodwill [Line Items]
Goodwill	30,829
Goodwill [Roll Forward]
Net balance at June 30, 2019	30,829
Translation adjustment	0
Net balance at September 30, 2019	30,829
Storage Solutions [Member]
Goodwill [Line Items]
Goodwill	16,736
Goodwill [Roll Forward]
Net balance at June 30, 2019	16,736
Translation adjustment	(53)
Net balance at September 30, 2019	16,683
Industrial [Member]
Goodwill [Line Items]
Goodwill	20,973
Goodwill [Roll Forward]
Net balance at June 30, 2019	20,973
Translation adjustment	(2)
Net balance at September 30, 2019	$ 20,971

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
-URI http://asc.fasb.org/extlink&oid=77989000&loc=SL49117168-202975

Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266

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X

- Definition

Amount of foreign currency translation gain (loss) which increases (decreases) an asset representing future economic benefits 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 50
-Paragraph 1
-Subparagraph (f)
-URI http://asc.fasb.org/extlink&oid=108376223&loc=d3e13816-109267

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

+ References

No definition available.

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- Definition

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+ References

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