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Goodwill and Other Intangible Assets
 12 Months Ended
Dec. 31, 2022
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 SystemsIndustrial MetalsClimateTotal
Goodwill$184,699 $8,854 $23,616 $217,169 
Accumulated impairment charges(40,552)(8,853)— (49,405)
Balance at December 26, 2020:144,147 1 23,616 167,764 
Additions12,098 — — 12,098 
Reductions (1)
(4,402)— (1,964)(6,366)
Impairment charges$— $— $(2,087)$(2,087)
Currency translation(79)— — (79)
Balance at December 25, 2021:151,764 1 19,565 171,330 
Reductions (2)
(11,216)— — (11,216)
Currency translation(2,526)— — (2,526)
Balance at December 31, 2022:    
Goodwill178,574 8,854 19,565 206,993 
Accumulated impairment charges(40,552)(8,853)— (49,405)
Goodwill, net$138,022 $1 $19,565 $157,588 
(1) Includes disposals of Die-Mold and STI businesses.
(2) Includes finalization of the purchase price allocation adjustment for Mueller Middle East of $11.2 million.
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, 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 2022, 2021, or 2020 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 31, 2022 was as follows:

 
(In thousands)
Gross Carrying AmountAccumulated AmortizationNet Carrying Amount
Customer relationships$53,156 $(15,658)$37,498 
Non-compete agreements2,333 (2,333)— 
Patents and technology18,032 (7,570)10,462 
Trade names and licenses13,374 (6,697)6,677 
Other1,676 (1,528)148 
Other intangible assets$88,571 $(33,786)$54,785 

The carrying amount of intangible assets at December 25, 2021 was as follows:

 
(In thousands)
Gross Carrying AmountAccumulated AmortizationNet Carrying Amount
Customer relationships$55,108 $(13,803)$41,305 
Non-compete agreements2,474 (2,458)16 
Patents and technology18,396 (6,501)11,895 
Trade names and licenses13,654 (5,598)8,056 
Other1,676 (1,234)442 
Other intangible assets$91,308 $(29,594)$61,714 

Amortization expense for intangible assets was $5.6 million in 2022, $6.3 million in 2021, and $6.1 million in 2020.  Future amortization expense is estimated as follows:

(In thousands)Amount
  
2023$5,145 
20244,930 
20254,808 
20264,663 
20274,662 
Thereafter30,577 
  
Expected amortization expense$54,785