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Condensed Financial Information of the Parent Company - Balance Sheets - Parentheticals (Details) - $ / shares
Sep. 30, 2021
Jul. 22, 2021
Jul. 21, 2021
Sep. 30, 2020
Sep. 12, 2020
Sep. 11, 2020
Parent Company Balance Sheets            
Common stock, par or stated value per share (in dollars per share) $ 0.001 $ 0.001 $ 0.001   $ 0.001 $ 0.001
Common stock, shares authorized 600,000,000 600,000,000 200,000,000   200,000,000 20,000,000
Common stock, shares issued 557,780,383     20,517,703    
Common stock, shares outstanding 557,780,383     20,517,703    
Reportable legal entity | FAMI            
Parent Company Balance Sheets            
Common stock, par or stated value per share (in dollars per share) $ 0.001     $ 0.001    
Common stock, shares authorized 600,000,000     200,000,000    
Common stock, shares issued 557,780,383     20,517,703    
Common stock, shares outstanding       20,517,703