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Other Current Assets (Tables)
 3 Months Ended
Mar. 31, 2013
Other Current Assets [Abstract]  
Schedule of Other Assets [Table Text Block]
Other current assets consist of the following (in thousands):
 
March 31, 2013
 
December 31, 2012
Value added tax receivables
$
17,327

 
$
18,002

Recoverable income taxes
3,495

 
6,192

Derivatives (foreign currency forward contracts)
2,031

 
1,062

Prepaid insurance
1,556

 
2,241

Prepaids and other current assets
16,151

 
14,279

 
$
40,560

 
$
41,776