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Provision for Credit Losses (Tables)
 12 Months Ended
Dec. 31, 2021
Accounts Receivable, after Allowance for Credit Loss [Abstract]  
Schedule of Provision for Credit Losses
The Company does business with most major international pharmaceutical companies. Provision for credit losses at December 31, 2021 and December 31, 2020 comprises:
December 31, 2021December 31, 2020
 (in thousands)
Opening provision$7,149 $7,380 
Amounts used during the year(116)(2,561)
Amounts provided during the year705 2,692 
Amounts released during the year(544)(510)
Foreign exchange(113)148 
 
Closing provision
$7,081 $7,149