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Note 16 - Earnings (Loss) Per Share - Common Stock ("EPS") (Tables)
9 Months Ended
Sep. 30, 2020
Notes Tables  
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
   
Three Months ended
September 30,
   
Nine Months ended
September 30,
 
   
20
20
   
2019
   
2020
   
2019
 
                                 
Stock options
   
1,603,053
     
1,755,556
     
1,603,053
     
1,755,556
 
Warrants
   
5,651,889
     
5,780,978
     
5,651,889
     
5,780,978
 
Total
   
7,254,942
     
7,536,534
     
7,254,942
     
7,536,534
 
   
Three Months ended
September 30,
   
Nine Months ended
September 30,
 
   
2020
   
2019
   
2020
   
2019
 
                                 
Stock options
   
2,421
     
-
     
18,829
     
-
 
Warrants
   
318,600
     
-
     
2,945,913
     
-
 
Restricted stock    
8,280
     
-
     
33,067
     
-
 
Convertible notes
   
-
     
1,912,454
     
-
     
1,143,293
 
Total
   
329,301
     
1,912,454
     
2,997,809
     
1,143,293