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Equity - Additional Information (Details)
9 Months Ended
Jul. 07, 2020
USD ($)
$ / shares
shares
Sep. 30, 2020
USD ($)
Offering
$ / shares
shares
Offering costs | $ $ 4,900,000 $ 355,000
Proceeds from offering, net of underwriting discounts and commissions | $ $ 71,300,000  
Unrecognized stock-based compensation cost | $   $ 23,600
Unrecognized stock-based compensation cost, weighted-average period recognized   3 years 3 months 21 days
Options granted, Number of Shares | shares   2,006,000
Options granted, Weighted Average Exercise Price   $ 11.52
Common stock shares reserved for issuance under employee stock purchase plan | shares   759,936
Employee stock ownership plan (ESOP), plan description   eligible employees to contribute, through payroll deductions, up to 15% of their earnings for the purchase of the Company’s shares of common stock at the lower of 85% of the closing price of the Company’s common stock on the first trading day of the offering period or 85% of the closing price of the Company’s common stock on the last trading day of the offering period
employee stock purchase plan number of offering per year | Offering   2
employee stock purchase plan offering commencement date   May 16, 2020
Employee Director [Member]    
Options granted, Number of Shares | shares   1,781,000
Employee Director [Member] | Minimum [Member]    
Options granted, Weighted Average Exercise Price   $ 6.44
Employee Director [Member] | Maximum [Member]    
Options granted, Weighted Average Exercise Price   $ 17.01
Non employee directors [Member]    
Options granted, Number of Shares | shares   225,000
Non employee directors [Member] | Minimum [Member]    
Options granted, Weighted Average Exercise Price   $ 12.25
Non employee directors [Member] | Maximum [Member]    
Options granted, Weighted Average Exercise Price   $ 13.58
Underwritten Public Offering [Member]    
Issuance of common stock and pre-funded warrants, net of commisions and offering expenses, shares | shares 3,262,471  
Common stock shares issued, price per share $ 15.25  
Prefunded Warrants [Member]    
Warrant to purchase common stock | shares 1,737,529  
Warrant to purchase common stock, exercise price per share $ 15.249999  
Warrant to purchase common stock after issuance, exercise price per share $ 0.000001