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Receivables (Tables)
 3 Months Ended
Mar. 31, 2014
Receivables [Abstract]  
Receivables
Receivables consist of the following (in thousands):
 
March 31, 2014
 
December 31, 2013
Receivables - current
 
 
 
Trade receivables
$
10,679

 
$
17,303

Income tax receivable
7,856

 
6,240

Value added tax receivable
51,540

 
49,168

Other
5,731

 
8,363

 
$
75,806

 
$
81,074

Receivables - non-current
 
 
 
Value added tax receivable
$
36,271

 
$
36,574