Stockholders' Equity - Additional Information (Details)		9 Months Ended
	Jun. 24, 2019 USD ($) $ / shares shares	Sep. 30, 2020 USD ($) director $ / shares shares	Sep. 30, 2019 USD ($) director shares	Dec. 31, 2019 $ / shares shares	Oct. 31, 2019 USD ($)
Class of Stock [Line Items]
Common stock, shares authorized		100,000,000		100,000,000
Common stock, par value per share (in dollars per share) | $ / shares		$ 0.001		$ 0.001
Preferred stock, shares authorized		2,500,000		2,500,000
Preferred stock, par value per share (in dollars per share) | $ / shares		$ 0.001		$ 0.001
Stock Issued During Period, Value, Issued for Services | $		$ 62,000	$ 70,300
Proceeds from Issuance Initial Public Offering | $		$ 0	$ 68,810,718
Common Stock, Capital Shares Reserved for Future Issuance		12,439,300
Share repurchase program authorization amount | $					$ 15,000,000.0
Debt Conversion, Converted Instrument, Shares Issued		4,810,002
Common Stock, Par or Stated Value Per Share | $ / shares		$ 0.001		$ 0.001
Director [Member]
Class of Stock [Line Items]
Stock Issued During Period, Shares, Issued for Services		2,400	4,488
Number of Members | director		2	3
Underwritten Public Offering [Member]
Class of Stock [Line Items]
Common stock, par value per share (in dollars per share) | $ / shares	$ 0.001
Stock Issued During Period, Shares, New Issues	4,312,500
Stock Issued During Period, Shares, Issued for Services	562,500
Shares Issued, Price Per Share | $ / shares	$ 17.00
Proceeds from Issuance of Common Stock | $	$ 68,800,000
Common Stock, Par or Stated Value Per Share | $ / shares	$ 0.001
Class A convertible preferred stock [Member]
Class of Stock [Line Items]
Preferred stock, shares authorized		800,000		800,000
Preferred stock, par value per share (in dollars per share) | $ / shares		$ 0.001		$ 0.001
Class B convertible preferred stock [Member]
Class of Stock [Line Items]
Preferred stock, shares authorized		585,000		585,000
Preferred stock, par value per share (in dollars per share) | $ / shares		$ 0.001		$ 0.001
Class C convertible preferred stock
Class of Stock [Line Items]
Preferred stock, shares authorized		250,000		250,000
Preferred stock, par value per share (in dollars per share) | $ / shares		$ 0.001		$ 0.001
Debt Conversion, Converted Instrument, Shares Issued		6,474,135
Convertible Common Stock [Member]
Class of Stock [Line Items]
Common Stock, Capital Shares Reserved for Future Issuance		7,600,000