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Goodwill and Other Intangible Assets | 12 Months Ended
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Dec. 25, 2021
Goodwill and Intangible Assets Disclosure [Abstract] |
Goodwill and Other Intangible Assets | Goodwill and Other Intangible Assets Goodwill The changes in the carrying amount of goodwill by segment were as follows:
(In thousands) |  | Piping Systems |  | Industrial Metals |  | Climate |  | Total
Goodwill |  | $ | 172,175 |  |  | $ | 8,854 |  |  | $ | 21,652 |  |  | $ | 202,681 |
Accumulated impairment charges |  | (40,552) |  |  | (8,853) |  |  | — |  |  | (49,405) |
Balance at December 28, 2019: |  | 131,623 |  |  | 1 |  |  | 21,652 |  |  | 153,276 |
Additions |  | 11,710 |  |  | — |  |  | 1,964 |  |  | 13,674 |
Currency translation |  | 814 |  |  | — |  |  | — |  |  | 814 |
Balance at December 26, 2020: |  | 144,147 |  |  | 1 |  |  | 23,616 |  |  | 167,764 |
Additions |  | 12,098 |  |  | — |  |  | — |  |  | 12,098 |
Reductions (1) |  | (4,402) |  |  | — |  |  | (1,964) |  |  | (6,366) |
Impairment charges |  | — |  |  | — |  |  | (2,087) |  |  | (2,087) |
Currency translation |  | (79) |  |  | — |  |  | — |  |  | (79) |
Balance at December 25, 2021: |  |  |  |  |  |  |  |
Goodwill |  | 192,316 |  |  | 8,854 |  |  | 21,652 |  |  | 222,822 |
Accumulated impairment charges |  | (40,552) |  |  | (8,853) |  |  | (2,087) |  |  | (51,492) |
Goodwill, net |  | $ | 151,764 |  |  | $ | 1 |  |  | $ | 19,565 |  |  | $ | 171,330 |
(1) Includes disposals of Die-Mold and STI businesses. |  |  |  |  |  |  |  |
Reporting units with recorded goodwill include Domestic Piping Systems Group, B&K LLC, Great Lakes, Heatlink Group, European Operations, Jungwoo-Mueller, Mueller Middle East, Westermeyer, Turbotec, and Flex Duct. Several factors give rise to goodwill in the Company’s acquisitions, such as the expected benefit from synergies of the combination and the existing workforce of the acquired businesses. With the exception of the Turbotec reporting unit, there were no impairment charges resulting from the 2021, 2020, or 2019 annual impairment tests as the estimated fair value of each of the reporting units exceeded its carrying value. During the third quarter of 2021, the Company recognized an impairment charge of $2.1 million related to Turbotec, reported within the Climate segment. Other Intangible Assets The carrying amount of intangible assets at December 25, 2021 was as follows:
(In thousands) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Customer relationships |  | $ | 55,108 |  |  | $ | (13,803) |  |  | $ | 41,305 |
Non-compete agreements |  | 2,474 |  |  | (2,458) |  |  | 16 |
Patents and technology |  | 18,396 |  |  | (6,501) |  |  | 11,895 |
Trade names and licenses |  | 13,654 |  |  | (5,598) |  |  | 8,056 |
Other |  | 1,676 |  |  | (1,234) |  |  | 442 |
Other intangible assets |  | $ | 91,308 |  |  | $ | (29,594) |  |  | $ | 61,714 |
The carrying amount of intangible assets at December 26, 2020 was as follows:
(In thousands) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Customer relationships |  | $ | 61,068 |  |  | $ | (11,676) |  |  | $ | 49,392 |
Non-compete agreements |  | 2,689 |  |  | (2,527) |  |  | 162 |
Patents and technology |  | 22,585 |  |  | (5,672) |  |  | 16,913 |
Trade names and licenses |  | 14,631 |  |  | (4,476) |  |  | 10,155 |
Other |  | 1,676 |  |  | (1,091) |  |  | 585 |
Other intangible assets |  | $ | 102,649 |  |  | $ | (25,442) |  |  | $ | 77,207 |
Amortization expense for intangible assets was $6.3 million in 2021, $6.1 million in 2020, and $5.4 million in 2019. Future amortization expense is estimated as follows:
(In thousands) |  | Amount
2022 |  | $ | 5,607 |
2023 |  | 5,295 |
2024 |  | 5,069 |
2025 |  | 4,943 |
2026 |  | 4,789 |
Thereafter |  | 36,011 |
Expected amortization expense |  | $ | 61,714 |

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -URI http://asc.fasb.org/topic&trid=2144416 + Details
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