Quarterly report pursuant to Section 13 or 15(d)

Fair Value Measurements (Reconciliation of the Beginning and Ending Liability Balance) (Details)

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Fair Value Measurements (Reconciliation of the Beginning and Ending Liability Balance) (Details) - USD ($)
9 Months Ended
Jun. 30, 2023
Jun. 30, 2022
Fair Value Measurements [Abstract]    
Beginning balance $ 4,294,000 $ 7,851,000
Change in fair value of derivative liabilities (2,319,000) 557,000
Ending balance $ 1,975,000 $ 8,408,000