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Note 5 - Stock-Based Compensation (Tables)
6 Months Ended
Jun. 30, 2022
Notes Tables  
Share-Based Payment Arrangement, Activity [Table Text Block]
  

Three Months Ended June 30,

  

Six Months Ended June 30,

 
  

2022

  

2021

  

2022

  

2021

 
  

(Unaudited - In thousands)

 

General and administrative expense

 $262  $740  $576  $985 
  $262  $740  $576  $985