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Provisions
 9 Months Ended
Sep. 30, 2020
Other Provisions, Contingent Liabilities and Contingent Assets [Abstract]  
Provisions Provisions
 
Post-
employment
benefits
Others
 
Total
 
Current
 
Non-current
 
 (in thousands)
At December 31, 2019$1,063 $842 $1,905 $— $1,905 
Arising during the period121 381 502 
Released (used) during the period— — — 
Released (unused) during the period— (292)(292)
      
At September 30, 2020$1,184 $931 $2,115 $230 $1,885 
The provision for post-employment benefits is for the lump sum retirement indemnity required to be paid to French employees. No employee has retired during the period.
“Other provisions” relate primarily to estimated payments to holders of patents which may be deemed as essential under the requirements of the LTE standard of royalties assessed on sales of modules. The provision is based on management’s judgment, taking into consideration the various articles, reports, industry discussions on the subject which were available, and is recorded in the cost of product revenue.