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Condensed Statements of Operations (Unaudited) (Parentheticals) - $ / shares
3 Months Ended 6 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Mar. 31, 2023
Mar. 31, 2022
Income Statement [Abstract]        
Net loss per share Diluted $ (0.21) $ (0.19) $ (0.32) $ (0.37)
Number of shares used in per share calculations Diluted 16,414,795 16,189,867 16,321,891 15,794,880