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Note 11 - Restructuring (Tables)
6 Months Ended
Jun. 30, 2020
Notes Tables  
Restructuring and Related Costs [Table Text Block]
   

Restructuring

Liability

 
   

(in thousands)

 

Balance at December 31, 2019

  $ 882  

Amount charged to operating expenses

    858  

Cash payments

    (752 )

Balance at June 30, 2020

  $ 988