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Segment Data - Sales and Operating Income (Loss) by Segment (Details) - USD ($) $ in Thousands | 3 Months Ended |
--- | --- | ---
Sep. 30, 2018 | Sep. 30, 2017 | Jun. 30, 2018
Segment Reporting Information [Line Items] |  |  |
Assets | $ 2,512,204 |  | $ 2,925,737
External sales: |  |  |
Sales (Note 3) | 586,687 | $ 542,454 |
Operating income (loss): |  |  |
Total operating (income) loss | (83,152) | (52,171) |
Interest expense | 8,097 | 7,149 |
Other income, net | (2,761) | (4,218) |
Income from continuing operations before income taxes | 77,816 | 49,240 |
Industrial [Member] |  |  |
External sales: |  |  |
Sales (Note 3) | 320,559 | 297,464 |
Operating income (loss): |  |  |
Total operating (income) loss | (58,542) | (32,039) |
Infrastructure [Member] |  |  |
External sales: |  |  |
Sales (Note 3) | 217,456 | 199,747 |
Operating income (loss): |  |  |
Total operating (income) loss | (23,860) | (20,390) |
WIDIA [Member] |  |  |
External sales: |  |  |
Sales (Note 3) | 48,672 | 45,243 |
Operating income (loss): |  |  |
Total operating (income) loss | (2,093) | 320 |
Corporate [Member] |  |  |
Operating income (loss): |  |  |
Total operating (income) loss | $ 1,343 | $ (62) |

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