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Other Current Liabilities (Tables)
 6 Months Ended
Jun. 30, 2014
Other Liabilities, Current [Abstract]  
Other Current Liabilities [Table Text Block]
Other current liabilities consist of the following:
 
 
June 30,
2014
 
December 31,
2013
Payroll related
$
11,125

 
$
8,680

Taxes other than income taxes
6,564

 
5,610

Benefits and pensions
5,370

 
7,240

Freight and rebates
3,758

 
3,960

Income taxes
4,509

 
4,368

Other
5,820

 
4,755

 
$
37,146

 
$
34,613