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Note 10 - Earnings (Loss) Per Share - Computation of Earnings Per Share Basic and Diluted (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 9 Months Ended
Sep. 30, 2021
Sep. 30, 2020
Sep. 30, 2021
Sep. 30, 2020
Net income (loss) attributable to Common shareholders $ 1,323 $ (87) $ 3,199 $ (2,437)
Weighted average shares outstanding (in shares) (3,947,284) (3,935,898) (3,945,816) (3,934,138)
Basic earnings (loss) per share (in dollars per share) $ 0.34 $ (0.02) $ 0.81 $ (0.62)
Net income (loss) attributable to Common shareholders $ 1,323 $ (87) $ 3,199 $ (2,437)
Effect of potentially dilutive restricted common shares (in shares) (1,141) 0 [1] (9,019) 0 [2]
Weighted average diluted shares outstanding (in shares) 3,948,425 3,935,898 3,954,835 3,934,138
Diluted earnings (loss) per share (in dollars per share) $ 0.34 $ (0.02) $ 0.81 $ (0.62)
[1] The weighted average diluted shares outstanding does not include 13,093 anti-dilutive restricted common shares for the three months ended September 30, 2020.
[2] The weighted average diluted shares outstanding does not include 1,630 anti-dilutive restricted common shares for the nine months ended September 30, 2020.