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Goodwill and Other Intangible Assets
3 Months Ended
Apr. 01, 2017
Goodwill and Intangible Assets Disclosure [Abstract]  
Goodwill and Other Intangible Assets
6. GOODWILL AND OTHER INTANGIBLE ASSETS: The change in the net carrying amount of goodwill for the three months ended April 1, 2017 by segment is as follows (in thousands):

 

     Steel Mills      Steel Products      Raw Materials      Total  

Balance at December 31, 2016

   $ 620,156      $ 702,995      $ 729,577      $ 2,052,728  

Acquisitions

     125,293        —          —          125,293  

Translation

     —          (745      —          (745
  

 

 

    

 

 

    

 

 

    

 

 

 

Balance at April 1, 2017

   $ 745,449      $ 702,250      $ 729,577      $ 2,177,276  
  

 

 

    

 

 

    

 

 

    

 

 

 

Nucor completed its most recent annual goodwill impairment testing during the fourth quarter of 2016 and concluded that there was no impairment of goodwill for any of its reporting units. There have been no triggering events requiring an interim assessment for impairment since the most recent annual impairment testing date.

 

Intangible assets with estimated useful lives of 5 to 22 years are amortized on a straight-line or accelerated basis and are comprised of the following (in thousands):

 

    April 1, 2017     December 31, 2016  
    Gross
Amount
    Accumulated
Amortization
    Gross
Amount
    Accumulated
Amortization
 

Customer relationships

  $ 1,408,658     $ 584,962     $ 1,295,803     $ 566,884  

Trademarks and trade names

    174,021       69,149       161,851       66,494  

Other

    62,807       21,883       62,807       20,248  
 

 

 

   

 

 

   

 

 

   

 

 

 
  $ 1,645,486     $ 675,994     $ 1,520,461     $ 653,626  
 

 

 

   

 

 

   

 

 

   

 

 

 

Intangible asset amortization expense for the first quarter of 2017 and 2016 was $22.4 million and $18.1 million, respectively. Annual amortization expense is estimated to be $90.9 million in 2017; $88.8 million in 2018; $85.9 million in 2019; $83.5 million in 2020; and $82.3 million in 2021.