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Warrants - Summary of Warrant Activity (Details) - Series B Convertible Preferred Stock Warrants - $ / shares
3 Months Ended 12 Months Ended
Dec. 31, 2020
Sep. 30, 2020
Number of units    
Outstanding and Exercisable 118,029 118,029
Weighted Average Exercise Price    
Outstanding and Exercisable $ 20.80 $ 20.80
Weighted Average Remaining Contractual Term (in years)    
Outstanding and Exercisable 1 year 1 month 6 days 1 year 4 months 6 days