XML 47 R37.htm IDEA: XBRL DOCUMENT v3.21.2
Note 7 - Property and Equipment, Net (Details Textual) - USD ($)
3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Depreciation, Total $ 58,600 $ 500,000 $ 500,000 $ 1,500,000