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Note 9 - Stock-Based Compensation (Tables)
3 Months Ended
Apr. 02, 2022
Notes Tables  
Share-Based Payment Arrangement, Expensed and Capitalized, Amount [Table Text Block]
  

Three Months Ended

 
  

April 2,

  

April 3,

 

(In thousands)

 

2022

  

2021

 

Cost of revenue

 $935  $666 

Research and development

  4,845   2,767 

Selling, general, and administrative

  8,345   7,021 

Total stock-based compensation

 $14,125  $10,454 
Share-Based Payment Arrangement, Performance Shares, Outstanding Activity [Table Text Block]

(Shares in thousands)

 

Total

 

Balance, January 1, 2022

  1,246 

Granted

  183 

Effect of vesting multiplier

  358 

Vested

  (638)

Balance, April 2, 2022

  1,149