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Note 6 - Share-based Compensation (Tables)
3 Months Ended
Mar. 31, 2021
Notes Tables  
Schedule of Employee Service Share Based Compensation Allocation of Recognized Period Costs, By Award Type [Table Text Block]
  

Three Months Ended

 
  

March 31,

 

Share-based compensation related to:

 

2021

  

2020

 

Common stock grants

 $100  $100 

Stock option grants

  53   60 

Restricted Stock Unit Awards ("RSUs")

  348   377 

Total share-based compensation

 $501  $537 
Share-based Payment Arrangement, Option, Activity [Table Text Block]
  

Shares Under Options

  

Weighted Average Exercise Price (per share)

  

Weighted Average Remaining Contractual Life (in years)

  

Aggregate Intrinsic Value (in thousands)

 

Outstanding at December 31, 2020

  94,513  $30.22         

Granted

  -            

Exercised

  -            

Outstanding at March 31, 2021

  94,513  $30.22   5.78  $1,852 

Exercisable at March 31, 2021

  79,621  $27.66   5.14  $1,765 

Vested and expected to vest at March 31, 2021

  94,513  $30.22  $5.78  $1,852 
Share-based Payment Arrangement, Restricted Stock Unit, Activity [Table Text Block]
  

Restricted Stock Units

  

Weighted Average
Grant Date
Fair Value

 

Outstanding at December 31, 2020

  93,187  $35.03 

Awarded

  45,292   49.14 

Shares vested

  (33,987)  31.29 

Outstanding at March 31, 2021

  104,492  $42.72