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Receivables (Tables)
 6 Months Ended
Jun. 30, 2018
Receivables [Abstract]  
Receivables
Receivables consist of the following:
In thousands
June 30, 2018
 
December 31, 2017
Current receivables:
 
 
 
Trade receivables
$
6,437

 
$
5,883

Value added tax receivable
15,602

 
10,982

Manquiri Notes Receivable
16,267

 
—

Other
2,453

 
2,204

 
$
40,759

 
$
19,069

Non-current receivables:
 
 
 
Value added tax receivable
$
28,999

 
$
28,750

Manquiri Notes Receivable
24,047

 
—

 
53,046

 
28,750

Total receivables
$
93,805

 
$
47,819