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Intangible Assets Including Goodwill - Carrying Value of Goodwill By Segment (Details) - USD ($) $ in Thousands | 6 Months Ended |  |
--- | --- | --- | ---
Dec. 31, 2016 | Dec. 12, 2016 | Feb. 01, 2016
Goodwill [Line Items] |  |  |  |
Goodwill |  | $ 78,293 |  |
Goodwill [Roll Forward] |  |  |  |
Net balance at June 30, 2015 |  | 78,293 |  |
Goodwill, Acquired During Period |  | 35,028 |  |
Goodwill, Purchase Accounting Adjustments |  | 88 |  |
Translation adjustment | [1] | (390) |  |
Net balance at December 31, 2016 |  | 113,019 |  |
Electrical Infrastructure [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill |  | 42,170 |  |
Goodwill [Roll Forward] |  |  |  |
Net balance at June 30, 2015 |  | 42,170 |  |
Goodwill, Acquired During Period |  | 0 |  |
Goodwill, Purchase Accounting Adjustments |  | 0 |  |
Translation adjustment | [1] | (227) |  |
Net balance at December 31, 2016 |  | 41,943 |  |
Oil Gas & Chemical [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill |  | 14,008 |  |
Goodwill [Roll Forward] |  |  |  |
Net balance at June 30, 2015 |  | 14,008 |  |
Goodwill, Acquired During Period |  | 28,723 |  |
Goodwill, Purchase Accounting Adjustments |  | 0 |  |
Translation adjustment |  | 0 |  |
Net balance at December 31, 2016 |  | 42,731 |  |
Storage Solutions [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill |  | 16,681 |  |
Goodwill [Roll Forward] |  |  |  |
Net balance at June 30, 2015 |  | 16,681 |  |
Goodwill, Acquired During Period |  | 0 |  |
Goodwill, Purchase Accounting Adjustments |  | 88 |  |
Translation adjustment | [1] | (121) |  |
Net balance at December 31, 2016 |  | 16,648 |  |
Industrial [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill |  | 5,434 |  |
Goodwill [Roll Forward] |  |  |  |
Net balance at June 30, 2015 |  | 5,434 |  |
Goodwill, Acquired During Period |  | 6,305 |  |
Goodwill, Purchase Accounting Adjustments |  | 0 |  |
Translation adjustment | [1] | (42) |  |
Net balance at December 31, 2016 |  | $ 11,697 |  |
Baillie Tank Equipment, Ltd. [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill |  |  |  | $ 7,030
Houston Interests, LLC [Member] |  |  |  |
Goodwill [Line Items] |  |  |  |
Goodwill |  |  | $ 35,028 |
[1] | .

X
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