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Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Jun. 30, 2017
Goodwill and Intangible Assets Disclosure [Abstract] |
Carrying value of goodwill by segment | The changes in the carrying amount of goodwill by segment are as follows:
|  | Electrical Infrastructure |  | Oil Gas & Chemical |  | Storage Solutions |  | Industrial |  | Total
|  | (In thousands)
Net balance at June 30, 2014 |  | $ | 43,243 |  |  | $ | 10,943 |  |  | $ | 10,027 |  |  | $ | 5,624 |  |  | $ | 69,837 |
Acquisition related adjustments |  | 175 |  |  | — |  |  | — |  |  | 44 |  |  | 219 |
Purchase of HDB (Note 2) |  | — |  |  | 3,065 |  |  | — |  |  | — |  |  | 3,065 |
Translation adjustment (1) |  | (1,044 | ) |  | — |  |  | (363 | ) |  | (196 | ) |  | (1,603 | )
Net balance at June 30, 2015 |  | 42,374 |  |  | 14,008 |  |  | 9,664 |  |  | 5,472 |  |  | 71,518 |
Purchase of BTE (Note 2) |  | — |  |  | — |  |  | 6,942 |  |  | — |  |  | 6,942 |
Translation adjustment (1) |  | (204 | ) |  | — |  |  | 75 |  |  | (38 | ) |  | (167 | )
Net balance at June 30, 2016 |  | 42,170 |  |  | 14,008 |  |  | 16,681 |  |  | 5,434 |  |  | 78,293 |
Purchase of Houston Interests (Note 2) |  | — |  |  | 19,596 |  |  | — |  |  | 15,550 |  |  | 35,146 |
Acquisition related adjustments |  | — |  |  | — |  |  | 88 |  |  | — |  |  | 88 |
Translation adjustment (1) |  | (18 | ) |  | — |  |  | (5 | ) |  | (3 | ) |  | (26 | )
Net balance at June 30, 2017 |  | $ | 42,152 |  |  | $ | 33,604 |  |  | $ | 16,764 |  |  | $ | 20,981 |  |  | $ | 113,501 |
Carrying value of other intangible assets | Information on the carrying value of other intangible assets is as follows:
|  |  |  | 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 other intangible assets |  |  |  | $ | 43,869 |  |  | $ | (17,573 | ) |  | $ | 26,296 |
|  |  |  | At June 30, 2016
|  | Useful Life |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
|  | (Years) |  | (In thousands)
Intellectual property |  | 9 to 15 |  | $ | 2,579 |  |  | $ | (1,246 | ) |  | $ | 1,333 |
Customer based |  | 1.5 to 15 |  | 28,179 |  |  | (9,655 | ) |  | 18,524 |
Non-compete agreements |  | 4 to 5 |  | 1,453 |  |  | (1,102 | ) |  | 351 |
Trade name |  | 3 to 5 |  | 1,615 |  |  | (824 | ) |  | 791 |
Total other intangible assets |  |  |  | $ | 33,826 |  |  | $ | (12,827 | ) |  | $ | 20,999 |
Schedule of Finite-Lived Intangible Assets, Future Amortization Expense | Amortization expense totaled $4.9 million, $3.6 million, and $5.0 million in fiscal 2017, 2016, and 2015, respectively. The Company recognized $1.6 million of amortization expense during the year ended June 30, 2017 for intangible assets recorded as part of the Houston Interests acquisition. We estimate that future amortization of other intangible assets will be as follows (in thousands):
For year ending: |
June 30, 2018 | $ | 4,742 |
June 30, 2019 | 3,501 |
June 30, 2020 | 3,491 |
June 30, 2021 | 3,472 |
June 30, 2022 | 2,618 |
Thereafter | 8,472 |
Total estimated amortization expense | $ | 26,296 |

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