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Accrued Liabilities
12 Months Ended
Dec. 31, 2015
Payables and Accruals [Abstract]  
Accounts Payable and Accrued Liabilities Disclosure [Text Block]

8. Accrued Liabilities

Other current liabilities consisted of the following at December 31:
 
 
 
(in thousands)
 
2015
 
2014
Payroll and incentive compensation
 
$
10,499
 
 
$
11,432
 
Union dues and benefits
 
 
8,182
 
 
 
6,721
 
Profit sharing and thrift plan
 
 
1,294
 
 
 
4,760
 
Taxes, other than income taxes
 
 
3,578
 
 
 
3,709
 
Legal settlements
 
 
 
 
 
302
 
Other
 
 
5,303
 
 
 
4,816
 
  
 
$
28,856
 
 
$
31,740