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Other Operating Expenses, Net Other Operating Expenses (Income) (Tables)
12 Months Ended
Dec. 31, 2015
Other Income and Expenses [Abstract]  
Components of other operating (income) expenses
Other operating expenses, net consisted of the following:
 
(Dollars in thousands)
 
Year Ended December 31,
 
2015
 
2014
 
2013
Environmental remediation expense
$
931

 
$
340

 
$

Impairment loss

 
3,046

 

Loss on sub-lease transaction

 

 
2,928

Employment tax matter

 

 
(400
)
Total other operating expenses, net
$
931

 
$
3,386

 
$
2,528