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Earnings Per Share. (Details) - Schedule of computation of basic and diluted earnings per share - USD ($) $ / shares in Units, shares in Thousands, $ in Thousands | 3 Months Ended
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Mar. 31, 2021 | Mar. 31, 2020
Schedule of computation of basic and diluted earnings per share [Abstract] |  |
Net income attributed to Alto Ingredients, Inc. | $ 4,678 | $ (25,100)
Less: Preferred stock dividends | (312) | (315)
Basic income per share: |  |
Income available to common stockholders | $ 4,366 | (25,415)
Income available to common stockholders (in Shares) | 70,351 |
Income available to common stockholders (in Dollars per share) | $ 0.06 |
Add: Dilutive securities |  |
Add: Dilutive securities (in Shares) | 2,113 |
Diluted income per share: |  |
Income available to common stockholders | $ 4,366 | $ (25,415)
Income available to common stockholders (in Shares) | 72,464 | 53,828
Income available to common stockholders (in Dollars per share) | $ 0.06 | $ (0.47)

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