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 ($)
6 Months Ended
Mar. 31, 2023
Mar. 31, 2022
Fair Value Measurements [Abstract]    
Beginning balance $ 4,294,000 $ 7,851,000
Change in fair value of derivative liabilities (530,000) 1,438,000
Ending balance $ 3,764,000 $ 9,289,000