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Goodwill and Other Intangible Assets | 12 Months Ended
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Dec. 29, 2018
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 |  | $ | 160,128 |  |  | $ | 8,854 |  |  | $ | 4,416 |  |  | $ | 173,398 |
Accumulated impairment charges |  | (40,552 | ) |  | (8,853 | ) |  | — |  |  | (49,405 | )
Balance at December 31, 2016: |  | 119,576 |  |  | 1 |  |  | 4,416 |  |  | 123,993 |
Additions (1) |  | 3,852 |  |  | — |  |  | — |  |  | 3,852 |
Currency translation |  | 2,448 |  |  | — |  |  | — |  |  | 2,448 |
Balance at December 30, 2017: |  | 125,876 |  |  | 1 |  |  | 4,416 |  |  | 130,293 |
Additions (2) |  | 5,049 |  |  | — |  |  | 17,770 |  |  | 22,819 |
Currency translation |  | (2,777 | ) |  | — |  |  | — |  |  | (2,777 | )
Balance at December 29, 2018: |  |  |  |  |  |  |  |  |  |  |  |
Goodwill |  | 168,700 |  |  | 8,854 |  |  | 22,186 |  |  | 199,740 |
Accumulated impairment charges |  | (40,552 | ) |  | (8,853 | ) |  | — |  |  | (49,405 | )
Goodwill, net |  | $ | 128,148 |  |  | $ | 1 |  |  | $ | 22,186 |  |  | $ | 150,335 |
(1) Includes finalization of the purchase price allocation adjustment for Jungwoo-Mueller of $0.2 million. (2) Includes finalization of the purchase price allocation adjustment for Heatlink Group of $2.8 million. Reporting units with recorded goodwill include Domestic Piping Systems Group, B&K LLC, Great Lakes, Heatlink Group, Die-Mold, European Operations, Jungwoo-Mueller, Westermeyer, Turbotec, and ATCO. 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. There were no impairment charges resulting from the 2018, 2017, or 2016 annual impairment tests as the estimated fair value of each of the reporting units exceeded its carrying value. Other Intangible Assets The carrying amount of intangible assets at December 29, 2018 was as follows:
(In thousands) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Customer relationships |  | $ | 43,104 |  |  | $ | (6,309 | ) |  | $ | 36,795 |
Non-compete agreements |  | 2,400 |  |  | (1,582 | ) |  | 818 |
Patents and technology |  | 17,879 |  |  | (2,595 | ) |  | 15,284 |
Trade names and licenses |  | 9,173 |  |  | (2,188 | ) |  | 6,985 |
Other |  | 2,526 |  |  | (437 | ) |  | 2,089 |
Other intangible assets |  | $ | 75,082 |  |  | $ | (13,111 | ) |  | $ | 61,971 |
The carrying amount of intangible assets at December 30, 2017 was as follows:
(In thousands) |  | Gross Carrying Amount |  | Accumulated Amortization |  | Net Carrying Amount
Customer relationships |  | $ | 36,518 |  |  | $ | (4,644 | ) |  | $ | 31,874 |
Non-compete agreements |  | 2,834 |  |  | (1,497 | ) |  | 1,337 |
Patents and technology |  | 7,673 |  |  | (1,868 | ) |  | 5,805 |
Trade names and licenses |  | 4,977 |  |  | (1,575 | ) |  | 3,402 |
Other |  | 213 |  |  | (623 | ) |  | (410 | )
Other intangible assets |  | $ | 52,215 |  |  | $ | (10,207 | ) |  | $ | 42,008 |
Amortization expense for intangible assets was $4.4 million in 2018, $3.1 million in 2017, and $4.3 million in 2016. Future amortization expense is estimated as follows:
(In thousands) |  | Amount
2019 |  | $ | 5,242 |
2020 |  | 5,047 |
2021 |  | 4,773 |
2022 |  | 4,693 |
2023 |  | 4,297 |
Thereafter |  | 37,919 |
Expected amortization expense |  | $ | 61,971 |

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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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