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Note 8 - Earnings Per Share - Computation of Net Income Per Share, Basic & Diluted (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended 9 Months Ended
Dec. 31, 2021
Sep. 30, 2021
Jun. 30, 2021
Dec. 31, 2020
Sep. 30, 2020
Jun. 30, 2020
Dec. 31, 2021
Dec. 31, 2020
Net (loss) income available for shareholders $ (2,060) $ 3,720 $ 1,995 $ (4,542) $ 2,679 $ 1,217 $ 3,655 $ (646)
Weighted average outstanding shares of common stock (in shares) 5,233     5,125     5,199 4,922
Dilutive effect of stock options (in shares) 0     0     107 0
Fully diluted shares (in shares) 5,233     5,125     5,333 4,922
Basic (loss) earnings per share (in dollars per share) $ (0.39)     $ (0.89)     $ 0.70 $ (0.13)
Diluted (loss) earnings per share (in dollars per share) $ (0.39)     $ (0.89)     $ 0.69 $ (0.13)
Restricted Stock Units (RSUs) [Member]                
Dilutive effect of RSUs (in shares) 0     0     27 0