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Interest (Tables)
12 Months Ended
Dec. 31, 2016
Interest [Abstract]  
Summary of interest incurred, capitalized and paid
The following chart summarizes the interest incurred, capitalized, and paid for 2016, 2015, and 2014:
(Thousands)
 
2016
 
2015
 
2014
Interest incurred
 
$
2,219


$
2,685

 
$
3,012

Less capitalized interest
 
430


235

 
225

Total net expense
 
$
1,789

 
$
2,450

 
$
2,787

Interest paid
 
$
1,611

 
$
2,042

 
$
2,215