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Goodwill and Other Intangible Assets - Carrying Amount of Goodwill Attributable to Each Segment (Details) - USD ($) $ in Thousands | 3 Months Ended | 9 Months Ended |
--- | --- | --- | ---
Mar. 31, 2020 | Dec. 31, 2019 | Mar. 31, 2021 | Jun. 30, 2020
Goodwill [Line Items] |  |  |  |
Goodwill and Intangible Asset Impairment | $ 15,600 | $ 14,600 |  |
Goodwill [Roll Forward] |  |  |  |
Gross goodwill |  |  | $ 1,086,920 | $ 1,081,452
Accumulated impairment losses |  |  | (810,872) | (810,872)
Goodwill, Beginning Balance |  |  | 270,580 |
Change in gross goodwill due to translation |  |  | 5,468 |
Goodwill, Ending Balance |  |  | 276,048 |
Infrastructure [Member] |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Gross goodwill |  |  | 633,211 | 633,211
Accumulated impairment losses |  |  | (633,211) | (633,211)
Goodwill, Beginning Balance |  |  | 0 |
Change in gross goodwill due to translation |  |  | 0 |
Goodwill, Ending Balance |  |  | 0 |
Metal Cutting |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Gross goodwill |  |  | 453,709 | 448,241
Accumulated impairment losses |  |  | (177,661) | $ (177,661)
Goodwill, Beginning Balance |  |  | 270,580 |
Change in gross goodwill due to translation |  |  | 5,468 |
Goodwill, Ending Balance |  |  | $ 276,048 |
WIDIA [Member] |  |  |  |
Goodwill [Roll Forward] |  |  |  |
Impairment charges | 13,700 | 13,100 |  |
Impairment of Intangible Assets, Indefinite-lived (Excluding Goodwill) | $ 1,900 | $ 1,500 |  |

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- Definition Amount after accumulated impairment loss of an asset representing future economic benefits arising from other assets acquired in a business combination that are not individually identified and separately recognized. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 942 -SubTopic 210 -Section S99 -Paragraph 1 -Subparagraph (SX 210.9-03(10)(1)) -URI http://asc.fasb.org/extlink&oid=120398452&loc=d3e534808-122878 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 5 -URI http://asc.fasb.org/extlink&oid=120320667&loc=SL49117168-202975 Reference 3: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 20 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=99380562&loc=d3e13770-109266 + Details
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