Goodwill and Other Intangible Assets (Details) - USD ($) $ in Thousands	12 Months Ended
Jun. 30, 2017	Jun. 30, 2016	Jun. 30, 2015	May 31, 2017
Carrying value of goodwill by segment
Net Goodwill	$ 78,293	$ 71,518	$ 69,837
Acquisition Related Adjustment for Final Working Capital Settlement	88		219
Goodwill resulting from purchase	35,146	6,942	3,065
Translation adjustment	(26)	(167)	(1,603)
Net Goodwill	113,501	78,293	71,518
Electrical Infrastructure [Member]
Carrying value of goodwill by segment
Net Goodwill	42,170	42,374	43,243
Acquisition Related Adjustment for Final Working Capital Settlement	0		175
Goodwill resulting from purchase	0	0	0
Translation adjustment	(18)	(204)	(1,044)
Net Goodwill	42,152	42,170	42,374
Oil Gas & Chemical [Member]
Carrying value of goodwill by segment
Net Goodwill	14,008	14,008	10,943
Acquisition Related Adjustment for Final Working Capital Settlement	0		0
Goodwill resulting from purchase	19,596	0	3,065
Translation adjustment	0	0	0
Net Goodwill	33,604	14,008	14,008
Storage Solutions [Member]
Carrying value of goodwill by segment
Net Goodwill	16,681	9,664	10,027
Acquisition Related Adjustment for Final Working Capital Settlement	88		0
Goodwill resulting from purchase	0	6,942	0
Translation adjustment	(5)	75	(363)
Net Goodwill	16,764	16,681	9,664
Industrial [Member]
Carrying value of goodwill by segment
Net Goodwill	5,434	5,472	5,624
Acquisition Related Adjustment for Final Working Capital Settlement	0		44
Goodwill resulting from purchase	15,550	0	0
Translation adjustment	(3)	(38)	(196)
Net Goodwill	20,981	$ 5,434	$ 5,472
Reporting Unit at Risk [Member]
Carrying value of goodwill by segment
Net Goodwill	$ 8,000
Reporting Unit, Percentage of Fair Value in Excess of Carrying Amount				9.00%

Acquisition related adjustment for the final working capital settlement.

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- 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://www.xbrl.org/2003/role/presentationRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 50
-Paragraph 1
-Subparagraph (a)
-URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 1
-URI http://asc.fasb.org/extlink&oid=6388280&loc=d3e13770-109266

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-Publisher FASB
-Name Accounting Standards Codification
-Topic 350
-SubTopic 20
-Section 45
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=64834752&loc=SL49117168-202975

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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.

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- 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.

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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.

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- Definition

Percentage of fair value of reporting unit in excess of carrying amount.

+ References

No definition available.

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