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Note 8 - Stock-based Incentive Plans (Tables)
6 Months Ended
Jun. 30, 2021
Notes Tables  
Nonvested Restricted Stock Shares Activity [Table Text Block]
   

Shares

   

Wtd. Avg. Price at Date of Issuance

 

Nonvested at December 31, 2020

    566,272     $ 7.21  

Vested

    (190,016 )   $ 7.27  

Nonvested at June 30, 2021

    376,256     $ 7.18