| GOODWILL AND OTHER INTANGIBLE ASSETS |
GOODWILL AND OTHER INTANGIBLE ASSETS As of June 30, 2026, goodwill of $279.2 million was allocated to the Metal Cutting reporting unit. We completed annual tests of goodwill impairment and recorded no impairments during 2026, 2025 or 2024 for our Metal Cutting reporting unit. 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 | $ | 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 | | | | | | | | | Activity for the year ended June 30, 2025: | | | | | | | | | | | | | | | | | | | Change in gross goodwill due to translation | 11,159 | | | — | | | 11,159 | | | | | | | | | | | | | | | Gross goodwill | 460,387 | | | 633,211 | | | 1,093,598 | | | Accumulated impairment losses | (177,661) | | | (633,211) | | | (810,872) | | | Balance as of June 30, 2025 | $ | 282,726 | | | $ | — | | | $ | 282,726 | | | | | | | | | Activity for the year ended June 30, 2026: | | | | | | | | | | | | | Change in gross goodwill due to translation | (3,513) | | | — | | | (3,513) | | | | | | | | | | | | | | | | | | | | | Gross goodwill | 456,874 | | | 633,211 | | | 1,090,085 | | | Accumulated impairment losses | (177,661) | | | (633,211) | | | (810,872) | | | Balance as of June 30, 2026 | $ | 279,213 | | | $ | — | | | $ | 279,213 | |
The components of our other intangible assets were as follows: | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | Estimated
Useful Life
(in years) | | June 30, 2026 | | | June 30, 2025 | | (in thousands) | | Gross Carrying
Amount | | Accumulated
Amortization | | | Gross Carrying
Amount | | Accumulated
Amortization | | Technology-based and other | 4 to 20 | | $ | 27,800 | | | $ | (23,805) | | | | $ | 32,699 | | | $ | (26,243) | | | Customer-related | 10 to 21 | | 159,836 | | | (117,352) | | | | 159,722 | | | (111,184) | | | Unpatented technology | 10 to 30 | | 26,586 | | | (25,852) | | | | 26,373 | | | (24,281) | | | Trademarks | 5 to 20 | | 23,542 | | | (14,869) | | | | 23,917 | | | (13,793) | | | | | | | | | | | | | | Total | | | $ | 237,764 | | | $ | (181,878) | | | | $ | 242,711 | | | $ | (175,501) | |
Amortization expense for intangible assets was $9.5 million, $10.8 million and $11.6 million for 2026, 2025 and 2024, respectively. Estimated amortization expense for 2027 through 2031 is $8.7 million, $7.7 million, $7.6 million, $7.6 million and $7.5 million, respectively.
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