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Intangible Assets Including Goodwill (Tables) | 9 Months Ended
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Mar. 31, 2018
Finite-Lived Intangible Assets [Line Items] |
Carrying Value of Goodwill by Segment | The changes in the carrying value of goodwill by segment are as follows:
| Electrical Infrastructure |  | Oil Gas & Chemical |  | Storage Solutions |  | Industrial |  | Total
| (In thousands)
Net balance at June 30, 2017 | $ | 42,152 |  |  | $ | 33,604 |  |  | $ | 16,764 |  |  | $ | 20,981 |  |  | $ | 113,501 |
Translation adjustment (1) | 30 |  |  | — |  |  | 78 |  |  | 6 |  |  | 114 |
Net balance at March 31, 2018 | $ | 42,182 |  |  | $ | 33,604 |  |  | $ | 16,842 |  |  | $ | 20,987 |  |  | $ | 113,615 |
(1) | The translation adjustments relate to the periodic translation of Canadian Dollar and South Korean Won denominated goodwill recorded as a part of prior acquisitions in Canada and South Korea, in which the local currency was determined to be the functional currency.
Carrying Value of Other Intangible Assets | Information on the carrying value of other intangible assets is as follows:
|  |  | At March 31, 2018
| Useful Life |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
| (Years) |  | (In thousands)
Intellectual property | 10 to 15 |  | $ | 2,579 |  |  | $ | (1,559 | ) |  | $ | 1,020 |
Customer-based | 6 to 15 |  | 40,229 |  |  | (16,857 | ) |  | 23,372 |
Non-compete agreements | 4 |  | 1,453 |  |  | (1,407 | ) |  | 46 |
Trade names | — |  | 1,630 |  |  | (1,630 | ) |  | — |
Total amortizing intangible assets |  |  | $ | 45,891 |  |  | $ | (21,453 | ) |  | $ | 24,438 |
|  |  | At June 30, 2017
| Useful Life |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
| (Years) |  | (In thousands)
Intellectual property | 9 to 15 |  | $ | 2,579 |  |  | $ | (1,425 | ) |  | $ | 1,154 |
Customer-based | 1 to 15 |  | 38,207 |  |  | (13,543 | ) |  | 24,664 |
Non-compete agreements | 4 to 5 |  | 1,453 |  |  | (1,298 | ) |  | 155 |
Trade names | 1 to 3 |  | 1,630 |  |  | (1,307 | ) |  | 323 |
Total amortizing intangible assets |  |  | $ | 43,869 |  |  | $ | (17,573 | ) |  | $ | 26,296 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense [Table Text Block] |
Period ending: |
Remainder of Fiscal 2018 | $ | 972 |
Fiscal 2019 | 3,837 |
Fiscal 2020 | 3,814 |
Fiscal 2021 | 3,808 |
Fiscal 2022 | 2,952 |
Fiscal 2023 | 2,418 |
Thereafter | 6,637 |
Total estimated remaining amortization expense at March 31, 2018 | $ | 24,438 |

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- Definition Tabular disclosure of goodwill by reportable segment and in total which includes a rollforward schedule. + References Reference 1: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13816-109267 Reference 2: http://www.xbrl.org/2003/role/presentationRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 50 -Paragraph 2 -URI http://asc.fasb.org/extlink&oid=35741047&loc=d3e13854-109267 + Details
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