Condensed Consolidated Balance Sheets (Current Period Unaudited) (Parentheticals) - $ / shares |
Jun. 30, 2022 |
Dec. 31, 2021 |
Dec. 31, 2020 |
Dec. 14, 2020 |
---|---|---|---|---|
Common stock, par value (in dollars per share) | $ 0.0001 | $ 0.0001 | $ 0.0001 | |
Common stock, shares authorized (in shares) | 115,000,000 | 115,000,000 | 115,000,000 | |
Common stock, shares issued (in shares) | 15,133,286 | 14,433,286 | 9,231,737 | |
Common stock, shares outstanding (in shares) | 15,133,286 | 14,433,286 | 9,231,737 | 9,231,737 |