| Schedule of Changes in Goodwill |
The changes in the carrying amount of goodwill by reportable segment are as follows (in thousands): | | | | | | | | | | | | | | | | | | | Fire Safety | | Specialty Products | | Total | Balance, December 31, 2023 | $ | 863,889 | | | $ | 172,390 | | | $ | 1,036,279 | | | Foreign currency translation | (11,135) | | | (2,457) | | | (13,592) | | | Purchase price allocation for business combination | — | | | 11,856 | | | 11,856 | | Balance, December 31, 2024 | $ | 852,754 | | | $ | 181,789 | | | $ | 1,034,543 | | | Foreign currency translation | 13,278 | | | 5,212 | | | 18,490 | | | Purchase price allocation for business combinations | — | | | 12,176 | | | 12,176 | | | Measurement period adjustment for business combination | — | | | 2 | | | 2 | | Balance, December 31, 2025 | $ | 866,032 | | | $ | 199,179 | | | $ | 1,065,211 | |
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| Schedule of Finite Lived Intangible Assets |
The following table presents the details of the intangible assets acquired in connection with business combinations during the year ended December 31, 2025 (dollars in thousands).
| | | | | | | | | | | | | | | | | | | Weighted Average Useful Life | | Estimated Useful Life | | Aggregate Acquisitions | | Customer lists | 10 Years | | 8 - 11 Years | | $ | 23,000 | | | Technology and patents | 7 Years | | 6 - 7 Years | | 9,100 | | | Tradenames | 8 Years | | 8 Years | | 3,600 | | | Total acquired intangible assets | | | | | $ | 35,700 | |
Intangible assets and related accumulated amortization as of December 31, 2025 and 2024 are as follows (in thousands): | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2025 | | Estimated
Useful Life
(in years) | | Gross Value | | Accumulated Impairment | | Foreign
Currency
Translation | | Accumulated
Amortization | | Net Book
Value | | Definite-Lived Intangible Assets: | | | | | | | | | | | | | | | Customer lists | 8 | to | 20 | | $ | 790,000 | | | $ | — | | | $ | (5,511) | | | $ | (156,300) | | | $ | 628,189 | | Technology and patents(1) | 4 | to | 20 | | 281,426 | | | (40,738) | | | (28) | | | (55,856) | | | 184,804 | | | Tradenames | 8 | to | 20 | | 108,100 | | | — | | | (1,024) | | | (20,746) | | | 86,330 | | Balance, December 31, 2025 | | | | | $ | 1,179,526 | | | $ | (40,738) | | | $ | (6,563) | | | $ | (232,902) | | | $ | 899,323 | |
(1) In May 2025, the Company settled its trade secret litigation with a subsidiary of Compass Minerals International, Inc. and simultaneously acquired related intangible assets, property, plant and equipment, and inventories. The total purchase consideration for the asset acquisition was $20.0 million in cash, of which $15.2 million was allocated to the technology-related intangible assets. The acquired technology-related intangible assets will be amortized on a straight-line basis over its estimated useful life of 4 years. | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | | December 31, 2024 | | Estimated
Useful Life
(in years) | | Gross Value | | Accumulated Impairment | | Foreign
Currency
Translation | | Accumulated
Amortization | | Net Book
Value | | Definite-Lived Intangible Assets: | | | | | | | | | | | | | | | Customer lists | 10 | to | 20 | | $ | 767,000 | | | $ | — | | | $ | (10,659) | | | $ | (118,596) | | | $ | 637,745 | | | Technology and patents | 10 | to | 20 | | 257,100 | | | (40,738) | | | (4,187) | | | (38,868) | | | 173,307 | | | Tradenames | 10 | to | 20 | | 104,500 | | | — | | | (1,393) | | | (15,742) | | | 87,365 | | Balance, December 31, 2024 | | | | | $ | 1,128,600 | | | $ | (40,738) | | | $ | (16,239) | | | $ | (173,206) | | | $ | 898,417 | |
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| Schedule of Intangible Asset Future Amortization Expense |
Estimated annual amortization expense of intangible assets for the five years subsequent to December 31, 2025 and thereafter is as follows (in thousands): | | | | | | | | | Years Ending December 31: | | Amount | | 2026 | | $ | 62,846 | | | 2027 | | 62,846 | | | 2028 | | 62,846 | | | 2029 | | 60,625 | | | 2030 | | 59,039 | | | Thereafter | | 591,121 | | | Total | | $ | 899,323 | |
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