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Intangible Assets Including Goodwill - Carrying Value of Goodwill By Segment (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Mar. 31, 2020 | Mar. 31, 2020
Goodwill [Line Items] |  |
Goodwill | $ 60,277 | $ 60,277
Amount of fair value in excess of carrying amount |  | 14,100
Goodwill [Roll Forward] |  |
Net balance at June 30, 2019 | 93,368 |
Goodwill impairment | (32,881) |
Translation adjustment | (210) |
Net balance at March 31, 2020 | 60,277 |
Electrical Infrastructure [Member] |  |
Goodwill [Line Items] |  |
Goodwill | 0 | 0
Goodwill [Roll Forward] |  |
Net balance at June 30, 2019 | 24,830 |
Goodwill impairment | (24,900) |
Translation adjustment | 70 |
Net balance at March 31, 2020 | 0 |
Oil Gas & Chemical [Member] |  |
Goodwill [Line Items] |  |
Goodwill | 30,829 | 30,829
Goodwill [Roll Forward] |  |
Net balance at June 30, 2019 | 30,829 |
Goodwill impairment | 0 |
Translation adjustment | 0 |
Net balance at March 31, 2020 | 30,829 |
Storage Solutions [Member] |  |
Goodwill [Line Items] |  |
Goodwill | 16,489 | 16,489
Goodwill [Roll Forward] |  |
Net balance at June 30, 2019 | 16,736 |
Goodwill impairment | 0 |
Translation adjustment | (247) |
Net balance at March 31, 2020 | 16,489 |
Industrial [Member] |  |
Goodwill [Line Items] |  |
Goodwill | 12,959 | $ 12,959
Goodwill [Roll Forward] |  |
Net balance at June 30, 2019 | 20,973 |
Goodwill impairment | (7,981) |
Translation adjustment | (33) |
Net balance at March 31, 2020 | $ 12,959 |

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