Summary of Significant Accounting Policies - Additional Information (Details) - USD ($)				3 Months Ended		9 Months Ended
	Sep. 30, 2020	Aug. 14, 2020	Jun. 24, 2019	Sep. 30, 2020	Sep. 30, 2019	Sep. 30, 2020	Sep. 30, 2019	Dec. 31, 2019
Summary Of Significant Accounting Policies [Line Items]
Offering expenses			$ 4,200,000
Conversion from convertible warrants			188,643
Payments of Stock Issuance Costs						$ 93,000	$ 3,950,000
Allowance for doubtful accounts	$ 100,000			$ 100,000		$ 100,000		$ 100,000
Bad debt expense				$ 0	$ 100,000		$ 100,000
Dividend yield				0.00%	0.00%	0.00%	0.00%
Dividends						$ 0
Minimum | ASU 2014-09
Summary Of Significant Accounting Policies [Line Items]
Standard payment terms						90 days
Maximum | ASU 2014-09
Summary Of Significant Accounting Policies [Line Items]
Period between payment by customer and transfer of promised services						1 year
Recognition period of incremental costs						1 year
IPO
Summary Of Significant Accounting Policies [Line Items]
Number of shares issued			9,109,725
Shares issued price per share			$ 17.00
Proceeds from issuance of common stock after deducting underwriting discounts, commissions and offering expenses upon completion of initial public offering			$ 139,800,000
Conversion from convertible preferred stock			18,474,703
IPO | Convertible Preferred Stock
Summary Of Significant Accounting Policies [Line Items]
Conversion from convertible warrants to purchase common stock			84,585
Follow - On Offering
Summary Of Significant Accounting Policies [Line Items]
Number of shares issued		6,578,947
Shares issued price per share		$ 19.00
Proceeds from Issuance or Sale of Equity		$ 117,500,000
Offering expenses incurred		$ 400,000
Payments of Stock Issuance Costs	$ 100,000