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Note 6 - Treasury Stock
3 Months Ended
Mar. 31, 2021
Notes to Financial Statements  
Treasury Stock [Text Block]
6.
     Treasury Stock
 
Common stock held in treasury totaled
963,509
and
948,347
 with a cost of
$2,234
 and
$2,182
 at
March 31, 2021
and
December 31, 2020
, respectively. These shares were withheld from employees to settle personal tax withholding obligations that arose as a result of restricted stock units that vested in the periods presented.