| Schedule of Intangible Assets and Goodwill |
The following table sets forth the gross carrying value, accumulated amortization and net values of intangible assets and goodwill as of March 31, 2025 and December 31, 2024: | | | | | | | | | | | | | | | | March 31, 2025 | | (in thousands) | Amortization
life in years | Gross carrying amount | Accumulated amortization and other | Net carrying amount | | | | | | | Finite-lived assets: | | | | | | AEC Trademarks and trade names | 6-15 | $ | 208 | | $ | (200) | | $ | 8 | | | AEC Technology | 10-15 | 6,048 | | (3,398) | | 2,650 | | | AEC Intellectual property | 15 | 1,250 | | (443) | | 807 | | | AEC Customer relationships | 8-15 | 69,298 | | (48,203) | | 21,095 | | | Heimbach Developed technology | 9 | 8,884 | | (1,832) | | 7,052 | | | Total Finite-lived intangible assets | | $ | 85,688 | | $ | (54,076) | | $ | 31,612 | | | | | | | | Indefinite-lived intangible assets: | | | | | | Heimbach Trade name | | $ | 5,951 | | $ | — | | $ | 5,951 | | | MC Goodwill | | 65,873 | | — | | 65,873 | | | AEC Goodwill | | 112,964 | | — | | 112,964 | | | Total Indefinite-lived intangible assets: | | $ | 184,788 | | $ | — | | $ | 184,788 | |
| | | | | | | | | | | | | | | | December 31, 2024 | | (in thousands) | Amortization
life in years | Gross carrying amount | Accumulated amortization and other | Net carrying amount | | | | | | | Finite-lived assets: | | | | | | AEC Trademarks and trade names | 6-15 | $ | 208 | | $ | (197) | | $ | 11 | | | AEC Technology | 10-15 | 5,820 | | (3,140) | | 2,680 | | | AEC Intellectual property | 15 | 1,250 | | (422) | | 828 | | | AEC Customer relationships | 8-15 | 69,175 | | (47,283) | | 21,892 | | | Heimbach Developed technology | 9 | 8,547 | | (1,543) | | 7,004 | | | Total Finite-lived assets | | $ | 85,000 | | $ | (52,585) | | $ | 32,415 | | | | | | | | Indefinite-lived intangible assets: | | | | | | Heimbach Trade name | | $ | 5,712 | | $ | — | | $ | 5,712 | | | MC Goodwill | | 63,988 | | — | | 63,988 | | | AEC Goodwill | | 112,273 | | — | | 112,273 | | | Total Indefinite-lived intangible assets: | | $ | 181,973 | | $ | — | | $ | 181,973 | |
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| Schedule of Finite-Lived Intangible Assets, Future Amortization Expense |
The changes in intangible assets, net and goodwill from December 31, 2024 to March 31, 2025, were as follows: | | | | | | | | | | | | | | | | | | | (in thousands) | December 31, 2024 | Other
Changes | Amortization | Currency
Translation | March 31, 2025 | | Finite-lived intangible assets: | | | | | | | AEC Trademarks and trade names | $ | 11 | | $ | — | | $ | (3) | | $ | — | | $ | 8 | | | AEC Technology | 2,680 | | — | | (142) | | 112 | | 2,650 | | | AEC Intellectual property | 828 | | — | | (21) | | — | | 807 | | | AEC Customer relationships | 21,892 | | — | | (870) | | 73 | | 21,095 | | | Heimbach Developed technology | 7,004 | | — | | (233) | | 281 | | 7,052 | | | Total Finite-lived intangible assets | $ | 32,415 | | $ | — | | $ | (1,269) | | $ | 466 | | $ | 31,612 | | | | | | | | | Indefinite-lived intangible assets: | | | | | | | Heimbach Trade name | $ | 5,712 | | $ | — | | $ | — | | $ | 239 | | $ | 5,951 | | | MC Goodwill | 63,988 | | — | | — | | 1,885 | | 65,873 | | | AEC Goodwill | 112,273 | | — | | — | | 691 | | 112,964 | | | Total Indefinite-lived assets: | $ | 181,973 | | $ | — | | $ | — | | $ | 2,815 | | $ | 184,788 | |
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