XML 37 R24.htm IDEA: XBRL DOCUMENT v3.20.4
Note 1 - Summary of Significant Accounting Policies (Tables)
12 Months Ended
Dec. 31, 2020
Notes Tables  
Schedule of Antidilutive Securities Excluded from Computation of Earnings Per Share [Table Text Block]
   
Year Ended December 31,
 
   
2020
   
2019
 
                 
Basic and diluted
   
19,282,157
     
19,201,663
 
Potentially dilutive
   
-
     
7,678