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Goodwill and Other Intangible Assets (Tables) | 3 Months Ended
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Mar. 31, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
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 |
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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