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Restructuring (Tables)
12 Months Ended
Dec. 31, 2017
Restructuring and Related Activities [Abstract]  
Cost Reductions
These costs are presented in the Consolidated Statements of Income as follows:
(Thousands)
 
2017
 
2016
 
2015
Cost of sales
 
$
463

 
$

 
$

Selling, general, and administrative (SG&A) expense
 
1,310

 

 

Other-net
 
255

 
2,586

 

Total
 
$
2,028

 
$
2,586

 
$