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Interest (Tables)
12 Months Ended
Dec. 31, 2015
Interest [Abstract]  
Summary of interest incurred, capitalized and paid as well as the amortization of capitalized interest
The following chart summarizes the interest incurred, capitalized, and paid, as well as the amortization of capitalized interest for 2015, 2014, and 2013:
(Thousands)
 
2015
 
2014
 
2013
Interest incurred
 
$
2,685


$
3,012

 
$
3,286

Less capitalized interest
 
235


225

 
250

Total net expense
 
$
2,450

 
$
2,787

 
$
3,036

Interest paid
 
$
2,042

 
$
2,215

 
$
2,671

Amortization of capitalized interest included in cost of sales
 
$
233

 
$
261

 
$
265