Note 18 - Employee Benefit Plan (Details Textual) - USD ($) |
12 Months Ended | |
|---|---|---|
Dec. 31, 2020 |
Dec. 31, 2019 |
|
| Defined Contribution Plan, Cost | $ 49,000 | $ 14,000 |
| X | ||||||||||
- Definition Amount of cost for defined contribution plan. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
|