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Goodwill and Other Intangible Assets (Notes) | 9 Months Ended
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Sep. 30, 2025
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Other Intangible Assets | Goodwill and Other Intangible Assets Goodwill Changes in the carrying amount of goodwill for the nine months ended September 30, 2025 are summarized as follows (dollars in thousands):
| Packaging |  | Aerospace |  | Specialty Products |  | Total
Balance, December 31, 2024 | $ | 280,500 |  |  | $ | 69,300 |  |  | $ | 6,560 |  |  | $ | 356,360 |
Goodwill from acquisitions | — |  |  | 15,490 |  |  | — |  |  | 15,490 |
Foreign currency translation and other | 13,130 |  |  | 2,050 |  |  | — |  |  | 15,180 |
Balance, September 30, 2025 | $ | 293,630 |  |  | $ | 86,840 |  |  | $ | 6,560 |  |  | $ | 387,030 |
Other Intangible Assets The Company amortizes its other intangible assets over periods ranging from one to 30 years. The gross carrying amounts and accumulated amortization of the Company's other intangibles are summarized below (dollars in thousands):
|  | As of September 30, 2025 |  | As of December 31, 2024
Intangible Category by Useful Life |  | Gross Carrying Amount |  | Accumulated Amortization |  | Gross Carrying Amount |  | Accumulated Amortization
Finite-lived intangible assets: |  |  |  |  |  |  |  |
Customer relationships, 5 – 12 years |  | $ | 147,350 |  |  | $ | (102,920) |  |  | $ | 138,840 |  |  | $ | (95,360) |
Customer relationships, 15 – 25 years |  | 129,460 |  |  | (91,370) |  |  | 129,230 |  |  | (86,690) |
Total customer relationships |  | 276,810 |  |  | (194,290) |  |  | 268,070 |  |  | (182,050) |
Technology and other, 1 – 15 years |  | 56,210 |  |  | (45,000) |  |  | 56,790 |  |  | (44,590) |
Technology and other, 17 – 30 years |  | 43,300 |  |  | (41,350) |  |  | 43,300 |  |  | (41,080) |
Total technology and other |  | 99,510 |  |  | (86,350) |  |  | 100,090 |  |  | (85,670) |
Indefinite-lived intangible assets: |  |  |  |  |  |  |  |
Trademark/Trade names |  | 62,650 |  |  | — |  |  | 60,640 |  |  | — |
Total other intangible assets |  | $ | 438,970 |  |  | $ | (280,640) |  |  | $ | 428,800 |  |  | $ | (267,720) |
Amortization expense related to intangible assets as included in the accompanying consolidated statement of income is summarized as follows (dollars in thousands):
|  | Three months ended September 30, |  | Nine months ended September 30,
|  | 2025 |  | 2024 |  | 2025 |  | 2024
Technology and other, included in cost of sales |  | $ | 810 |  |  | $ | 810 |  |  | $ | 2,400 |  |  | $ | 2,470 |
Customer relationships, included in selling, general and administrative expenses |  | 3,590 |  |  | 3,400 |  |  | 10,540 |  |  | 10,170 |
Total amortization expense |  | $ | 4,400 |  |  | $ | 4,210 |  |  | $ | 12,940 |  |  | $ | 12,640 |

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-20/tableOfContent + Details
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