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Net Income (Loss) Per Share (Tables)
 3 Months Ended 12 Months Ended
Mar. 31, 2021
Dec. 31, 2020
Earnings Per Share [Abstract]    
Schedule of Earnings Per Share, Basic and Diluted [Table Text Block]
 

Three Months Ended
March 31,
   

2021

  

2020

Net income (loss) from operations – basic and diluted

  

$

916,729

  

$

(438,384

)

Weighted average shares outstanding – basic

  

 

6,906,454

  

 

6,873,571

 

Weighted average shares outstanding – diluted

  

 

6,906,454

  

 

6,873,571

 

Per share data:

  

 

    

 

  

 

Basic from operations

  

$

0.13

  

$

(0.06

)

Diluted from operations

  

$

0.13

  

$

(0.06

)
 

Years Ended
December 31,
   

2020

  

2019

Net income (loss) from continuing operations – basic and diluted

  

$

1,371,262

  

$

(8,380,060

)

Total weighted average shares outstanding – basic

  

 

6,884,690

  

 

6,873,652

 

Dilutive potential options

  

 

3,118

  

 

—

 

Total weighted average shares outstanding – diluted

  

 

6,887,808

  

 

6,873,652

 
   

 

    

 

  

 

Per share data:

  

 

    

 

  

 

Basic from continuing operations

  

$

0. 20

  

$

(1.22

)

Diluted from continuing operations

  

$

0. 20

  

$

(1.22

)