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Note 16 - 12 Month Earnings Statement - 12 Month Earnings Statement (Details) - USD ($)
$ / shares in Units, $ in Thousands
 3 Months Ended 12 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Mar. 31, 2022
Revenues $ 41,844 $ 32,728 $ 154,735
Cost of sales 39,832 32,446 147,494
Gross profit 2,012 282 7,241
Operating expenses 4,085 4,593 17,597
Operating loss (2,073) (4,311) (10,356)
Other income (expense), net 21 3,362 12,008
Net income before benefit for income taxes (2,397) (1,178) 1,652
Benefit for income taxes 7 32 (1)
Net income $ (2,404) $ (1,210) $ 1,653
Net income per common share-basic (in dollars per share) $ (0.12) $ (0.07) $ 0.09
Net income per common share-diluted (in dollars per share) $ (0.12) $ (0.07) $ 0.08