Quarterly report pursuant to Section 13 or 15(d)

Note 4 - Stock-based Compensation - Summary of Unvested Restricted Stock (Details)

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Note 4 - Stock-based Compensation - Summary of Unvested Restricted Stock (Details) - Restricted Stock [Member]
6 Months Ended
Jun. 30, 2022
$ / shares
shares
Unvested at beginning of period (in shares) | shares 95,000
Unvested at beginning of period, weighted average grant-date fair value (in dollars per share) | $ / shares $ 1.40
Vested (in shares) | shares (5,000)
Vested, weighted average grant-date fair value (in dollars per share) | $ / shares $ 1.96
Unvested at end of period (in shares) | shares 90,000
Unvested at end of period, weighted average grant-date fair value (in dollars per share) | $ / shares $ 1.37