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Consolidated Balance Sheets (Parenthetical) - $ / shares
Sep. 30, 2021
Sep. 30, 2020
Statement Of Financial Position [Abstract]    
Preferred stock, par value $ 0 $ 0
Preferred stock, shares authorized 5,000,000 5,000,000
Preferred stock, shares issued 0 0
Preferred stock, shares outstanding 0 0
Common stock, no par value $ 0 $ 0
Common stock, shares authorized 125,000,000 125,000,000
Common stock, shares issued 35,958,759 35,526,918
Common stock, shares outstanding 35,958,759 35,526,918
Common stock, warrants issued 4,899,497 0
Common stock, warrants outstanding 4,899,497 0