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Income Taxes (Details)
9 Months Ended 12 Months Ended
Sep. 30, 2018
Sep. 30, 2019
Income Tax Disclosure [Abstract]    
Income tax benefit at federal statutory rate (21.00%) (21.00%)
State income tax, net of federal benefit 7.70% 7.70%
Warrant expense 9.40% 2.50%
Disqualified interest and other 1.00% 0.60%
Research credits 1.50% 2.00%
Valuation allowance 19.80% 28.80%
Effective tax rate