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 ($)
3 Months Ended
Dec. 31, 2021
Dec. 31, 2020
Fair Value Measurements [Abstract]    
Beginning balance $ 7,851,000 $ 4,182,000
Change in fair value of derivative liabilities 209,000 604,000
Ending balance $ 8,060,000 $ 4,786,000