XML 76 R48.htm IDEA: XBRL DOCUMENT v3.21.1
Note 5 - Intangible Assets - Expected Future Amortization Expense (Details) - USD ($)
Dec. 31, 2020
Dec. 31, 2019
2021 $ 117,488  
2022 117,489  
2023 117,488  
2024 81,171  
2025 8,535  
Thereafter 37,889  
Intangible assets, net $ 480,060 $ 488,716