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Provision for Doubtful Debts
 12 Months Ended
Dec. 31, 2018
Accounts Receivable, Net [Abstract]  
Provision for Doubtful Debts
Provision for Doubtful Debts
The Company does business with most major international pharmaceutical companies. Provision for doubtful debts at December 31, 2018 comprises:
 
December 31, 2018

December 31, 2017

 
(in thousands)
Opening provision
$
8,930

$
9,450

Amounts used during the year
(995
)
(2,733
)
Amounts provided during the year
3,083

5,116

Amounts released during the year
(2,355
)
(3,106
)
Foreign exchange
226

203

 
Closing provision
$
8,889

$
8,930