Quarterly report pursuant to Section 13 or 15(d)

Note 8 - Stockholders' Equity - Restricted Stock Activity (Details)

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Note 8 - Stockholders' Equity - Restricted Stock Activity (Details) - Restricted Stock [Member]
9 Months Ended
Sep. 30, 2020
$ / shares
shares
Nonvested at December 31, 2019 (in shares) | shares 957,682
Nonvested at December 31, 2019, wtd. avg. price (in dollars per share) | $ / shares $ 7.34
Vested (in shares) | shares (293,583)
Vested, wtd. avg. price (in dollars per share) | $ / shares $ 7.53
Nonvested at September 30, 2020 (in shares) | shares 664,099
Nonvested at June 30, 2020, wtd. avg. price (in dollars per share) | $ / shares $ 7.25