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Note G - Stock Based Compensation (Tables)
 3 Months Ended
Jun. 30, 2020
Notes Tables  
Nonvested Restricted Stock Shares Activity [Table Text Block]
   
Number of Shares
    
Weighted Average
Grant Date Fair
Value Per Share
  
Unvested at March 31, 2020
    
270,000
     $
6.37
  
Cancelled or forfeited
    
—
      
—
  
Granted
    
11,000
      
4.53
  
Vested
    
—
      
—
  
Unvested at June 30, 2020
    
281,000
     $
6.30