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Note 8 - Stockholders' Equity - Schedule of Restricted Stock (Details) - Restricted Stock [Member]
 9 Months Ended
Sep. 30, 2022
$ / shares
shares
Non-vested as January 1, 2022 (in shares) 96,557
Non-vested as January 1, 2022 (in dollars per share) | $ / shares $ 2.33
Granted, Shares (in shares) 975,148
Granted, Weighted Average Grant-Date Fair Value per Award (in dollars per share) | $ / shares $ 0.86
Vested, Shares (in shares) (224,850)
Cancelled, Shares (in shares) (122,693)
Non-vested, Shares (in shares) 724,162
Non-vested, Weighted Average Grant-Date Fair Value per Award (in dollars per share) | $ / shares $ 1.11