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Goodwill and Other Intangible Assets Goodwill and Other Intangible Assets (Tables) | 12 Months Ended
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Jun. 30, 2024
Goodwill and Intangible Assets Disclosure [Abstract] |
Schedule of Goodwill [Table Text Block] | A summary of the carrying amount of goodwill attributable to each segment, as well as the changes in such, is as follows:
(in thousands) | Metal Cutting |  | Infrastructure |  | Total
Gross goodwill | $ | 441,891 |  |  | $ | 633,211 |  |  | $ | 1,075,102 |
Accumulated impairment losses | (177,661) |  |  | (633,211) |  |  | (810,872) |
Balance as of June 30, 2022 | $ | 264,230 |  |  | $ | — |  |  | $ | 264,230 |
Activity for the year ended June 30, 2023: |  |  |  |  |
Change in gross goodwill due to translation | 5,321 |  |  | — |  |  | 5,321 |
Gross goodwill | 447,212 |  |  | 633,211 |  |  | 1,080,423 |
Accumulated impairment losses | (177,661) |  |  | (633,211) |  |  | (810,872) |
Balance as of June 30, 2023 | $ | 269,551 |  |  | $ | — |  |  | $ | 269,551 |
Activity for the year ended June 30, 2024: |  |  |  |  |
Acquisition | 3,800 |  |  | — |  |  | 3,800 |
Change in gross goodwill due to translation | (1,784) |  |  | — |  |  | (1,784) |
Gross goodwill | 449,228 |  |  | 633,211 |  |  | 1,082,439 |
Accumulated impairment losses | (177,661) |  |  | (633,211) |  |  | (810,872) |
Balance as of June 30, 2024 | $ | 271,567 |  |  | $ | — |  |  | $ | 271,567 |
Components of Other Intangible Assets [Table Text Block] | The components of our other intangible assets were as follows:
| Estimated Useful Life (in years) |  | June 30, 2024 |  |  | June 30, 2023
(in thousands) |  | Gross Carrying Amount |  | Accumulated Amortization |  |  | Gross Carrying Amount |  | Accumulated Amortization
Technology-based and other | 4 to 20 |  | $ | 31,715 |  |  | $ | (24,476) |  |  |  | $ | 31,872 |  |  | $ | (23,838) |
Customer-related | 10 to 21 |  | 179,529 |  |  | (120,091) |  |  |  | 179,889 |  |  | (112,890) |
Unpatented technology | 10 to 30 |  | 31,485 |  |  | (27,130) |  |  |  | 31,487 |  |  | (25,177) |
Trademarks | 5 to 20 |  | 23,044 |  |  | (12,655) |  |  |  | 12,426 |  |  | (11,441) |
Trademarks | Indefinite |  | — |  |  | — |  |  |  | 10,836 |  |  | — |
Total |  |  | $ | 265,773 |  |  | $ | (184,352) |  |  |  | $ | 266,510 |  |  | $ | (173,346) |

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