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NET INCOME PER SHARE ATTRIBUTABLE TO THE STOCKHOLDERS OF ARGAN (Details) - USD ($)
$ / shares in Units, shares in Thousands, $ in Thousands
3 Months Ended
Apr. 30, 2023
Apr. 30, 2022
NET INCOME PER SHARE    
Net income $ 2,109 $ 7,485
Weighted average number of shares outstanding - basic 13,413 14,910
Effects of stock awards 133 82
Weighted average number of shares outstanding - diluted 13,546 14,992
Basic (in dollars per share) $ 0.16 $ 0.50
Diluted (in dollars per share) $ 0.16 $ 0.50