XML 37 R28.htm IDEA: XBRL DOCUMENT v3.21.1
Note 1 - Organization and Business (Details Textual)
$ in Millions
1 Months Ended 3 Months Ended 12 Months Ended
Jun. 30, 2020
USD ($)
Apr. 30, 2020
USD ($)
Mar. 31, 2021
USD ($)
Dec. 31, 2020
USD ($)
Number of Countries in which Entity Operates     60  
April 6, 2020 Public Offering [Member]        
Proceeds from Issuance of Common Stock   $ 4.6 $ 16.9  
June 30, 2020 Public Offering [Member]        
Proceeds from Issuance of Common Stock $ 13.4     $ 2.7