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Goodwill and Other Intangible Assets (Tables)
3 Months Ended
Apr. 03, 2022
Goodwill and Intangible Assets Disclosure [Abstract]  
Changes in goodwill by segment
A summary of the changes in goodwill for the three months ended April 3, 2022 is as follows: 

Consumer
Packaging
Industrial Paper PackagingAll OtherTotal
Goodwill at December 31, 2021$572,415 $367,780 $384,305 $1,324,501 
2022 Acquisitions366,098 — — 366,098 
Foreign currency translation(751)(757)(783)(2,291)
Goodwill at April 3, 2022$937,762 $367,023 $383,522 $1,688,308 
Summary of other intangible assets A summary of other intangible assets as of April 3, 2022 and December 31, 2021 is as follows:    
April 3,
2022
December 31,
2021
Other Intangible Assets, gross:
Patents$29,320 $29,315 
Customer lists1,054,757 592,195 
Trade names32,020 32,043 
Proprietary technology57,846 22,846 
Other2,808 2,807 
Total Other Intangible Assets, gross$1,176,751 $679,206 
Accumulated Amortization:
Patents$(16,701)$(16,275)
Customer lists(364,315)(347,274)
Trade names(14,497)(14,106)
Proprietary technology(22,233)(21,394)
Other(2,038)(2,014)
Total Accumulated Amortization$(419,784)$(401,063)
Other Intangible Assets, net$756,967 $278,143