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Note 7 - Impairement Losses and Restructuring Cost (Tables)
12 Months Ended
Dec. 31, 2019
Notes Tables  
Restructuring and Related Costs [Table Text Block]
   

Employee related

   

Facilities related

   

Total

 

Balance as of December 31, 2018

    760       2,268       3,028  

Accruals/(reversals)

    2,751       (70 )     2,681  

Payments

    (2,185 )     (1,684 )     (3,869 )

Balance as of December 31, 2019

  $ 1,326     $ 514     $ 1,840