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Warrants - Summary of Warrants Outstanding and Exercisable (Details) | Sep. 30, 2019 $ / shares shares
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Series B Convertible Preferred Warrants Exercise Price $16.60 |
Class Of Warrant Or Right [Line Items] |
Number of warrants outstanding | 54,396
Warrants exercise price, outstanding | $ / shares | $ 16.60
Number of warrants exercisable | 54,396
Warrants exercise price, exercisable | $ / shares | $ 16.60
Series B Convertible Preferred Warrants Exercise Price $16.80 |
Class Of Warrant Or Right [Line Items] |
Number of warrants outstanding | 17,857
Warrants exercise price, outstanding | $ / shares | $ 16.80
Number of warrants exercisable | 17,857
Warrants exercise price, exercisable | $ / shares | $ 16.80
Series B Convertible Preferred Warrants Exercise Price $24.30 |
Class Of Warrant Or Right [Line Items] |
Number of warrants outstanding | 12,383
Warrants exercise price, outstanding | $ / shares | $ 24.30
Number of warrants exercisable | 12,383
Warrants exercise price, exercisable | $ / shares | $ 24.30
Series B Convertible Preferred Warrants Exercise Price $28.50 |
Class Of Warrant Or Right [Line Items] |
Number of warrants outstanding | 33,393
Warrants exercise price, outstanding | $ / shares | $ 28.50
Number of warrants exercisable | 33,393
Warrants exercise price, exercisable | $ / shares | $ 28.50
Series B Convertible Preferred Stock Warrants |
Class Of Warrant Or Right [Line Items] |
Number of warrants outstanding | 118,029
Number of warrants exercisable | 118,029

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