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Note 11 - Share-based Compensation
 3 Months Ended
Mar. 31, 2021
Notes to Financial Statements  
Share-based Payment Arrangement [Text Block]
NOTE
11
— SHARE-BASED COMPENSATION
 
​
There was
no
 stock option activity during the
three
months ended
March 31, 2021
 and
no
 stock options were outstanding as of
March 31, 2021. 
 
The following table summarizes the Company's restricted stock unit and performance award activity during the
three
months ended
March 31, 2021
: 
 
     
 
 
  
Weighted Average
  
   
Number of
    
Grant-Date Fair Value
  
   
Shares
    
Per Share
  
Unvested as of December 31, 2020
    
1,332,884
     $
1.86
  
Granted
    
80,014
     $
2.06
  
Vested
    
(241,805
 )   $
2.14
  
Unvested as of March 31, 2021
    
1,171,093
     $
1.84
  
 
Under certain situations, shares are withheld from issuance to cover taxes for the vesting of restricted stock units and performance awards. For the
three
months ended
March 31, 2021,
105,399
of such shares were withheld to cover
$847
of tax obligations. 
 
The following table summarizes share-based compensation expense included in the Company's condensed consolidated statements of operations for the
three
months ended
March 31, 2021
and
2020
, as follows: 
 
   
Three Months Ended March 31,
  
   
2021
    
2020
  
Share-based compensation expense:
      
 
      
 
Cost of sales   $
26
     $
22
  
Selling, general and administrative    
193
      
286
  
Net effect of share-based compensation expense on net income
   $
219
     $
308
  
Reduction in earnings per share:
      
 
      
 
Basic earnings per share
   $
0.01
     $
0.02
  
Diluted earnings per share
   $
0.01
     $
0.02