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Income Taxes (Details Narrative) - USD ($)
$ in Millions
 12 Months Ended
Sep. 30, 2023
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2015
Operating Loss Carryforwards [Line Items]        
Operating loss carryforwards     $ 2.5  
Operating loss carry forwards expiration year 2036      
Research and Development tax credits $ 2.7 $ 2.2    
Research and development tax credits year 2029      
Gross deferred tax asset $ 7.2      
Research and development tax credit carryforwards     0.8  
Decrease in valuation allowance     3.3  
Federal [Member]        
Operating Loss Carryforwards [Line Items]        
Operating loss carryforwards $ 126.3 123.4 $ 12.1 $ 25.8
Operating loss carryforwards description $37.7 million will begin to expire in 2025 and $88.6 million can be carried forward indefinitely      
State and Local Jurisdiction [Member]        
Operating Loss Carryforwards [Line Items]        
Operating loss carryforwards $ 16.6 17.2    
Foreign Tax Authority [Member]        
Operating Loss Carryforwards [Line Items]        
Operating loss carryforwards 12.9 10.6    
Foreign Tax Authority [Member] | Australia, Dollars        
Operating Loss Carryforwards [Line Items]        
Operating loss carryforwards $ 20.1 $ 14.9