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Stockholders' Equity (Tables)
 3 Months Ended
Mar. 31, 2021
Stockholders' Equity Note [Abstract]  
Share-based Payment Arrangement, Option, Activity [Table Text Block]
Stock option activity under the Company’s stock-based compensation plans is shown below:


   

Number of
Shares

    

Average
Exercise
Price per Share

    

Aggregate Intrinsic
Value(1)

    

Weighted
Average
Remaining
Contractual
Term in Years

  
                                 

Outstanding at January 1, 2021

    

340,500

    

$

5.97

    

$

-

      

2.33

  

Exercisable at January 1, 2021

    

340,500

      

5.97

    

$

-

      

2.33

  
                                 

Granted

    

-

      

-

      

-

      

-

  

Exercised

    

-

      

-

      

-

      

-

  

Forfeited

    

-

      

-

      

-

      

-

  

Outstanding at March 31, 2021

    

340,500

    

$

5.97

    

$

-

      

2.08

  

Exercisable at March 31, 2021

    

340,500

    

$

5.97

    

$

-

      

2.08