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Stockholders' Equity - Additional Information (Details)			1 Months Ended				3 Months Ended
Stockholders' Equity - Additional Information (Details)	Feb. 03, 2021 USD ($) Investor $ / shares shares	Jul. 14, 2020 USD ($)	May 02, 2021 shares	Mar. 27, 2021 USD ($) shares	Aug. 31, 2020 USD ($) $ / shares shares	Sep. 30, 2019	Mar. 31, 2021 USD ($) $ / shares shares	Mar. 31, 2020 USD ($) shares	Dec. 31, 2020 $ / shares shares
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Common stock, shares authorized \| shares							200,000,000		200,000,000
Common stock, par value \| $ / shares							$ 0.0001		$ 0.0001
Preferred stock, shares authorized \| shares							10,000,000
Preferred stock, par value \| $ / shares							$ 0.0001
Common stock, shares outstanding \| shares							29,040,270		24,753,102
Stock-based compensation expense							$ 1,044,000	$ 787,000
Unamortized stock compensation for stock options							$ 11,000.0
Weighted-average recognition period of stock option unamortized							2 years 10 months 24 days
Employee Stock [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Repricing of outstanding options \| shares							3,946,817		2,463,317
Exercise price of repriced options per share \| $ / shares							$ 2.45
Retention stock options issued to purchase common shares \| shares							1,493,500
Equity Unit Purchase Agreements
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Number Of Institutional Investors \| Investor	2
Shares upon exercise of warrants \| shares	1,285,713
Gross Proceeds From Issuance Of Common Stock	$ 30,000,000.0
Gross proceeds from issuance of common stock	30,000,000.0
Proceeds from issuance of common stock	$ 29,900,000
2019 ATM Facility
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Commission rate						3.00%
Common Stock
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock, Shares \| shares								83,662
Common Stock \| Purchase Agreement \| Lincoln Park Capital Fund, LLC
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock, Shares \| shares			0	65,374
Stock issuance costs				$ 400,000
Estimated maximum amount of common stock issuable				$ 15,000,000.0
Term of purchase agreement				36 months
Fair market value of commitment shares				$ 200,000
Common Stock \| Underwritten Public Offering [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock, Shares \| shares					5,461,169
Gross Proceeds From Issuance Of Common Stock					$ 38,200,000
Sale of stock, price per share \| $ / shares					$ 7.00
Gross proceeds from issuance of common stock					$ 38,200,000
Proceeds from issuance of common stock					$ 35,700,000
Common Stock \| Over-Allotment Option [Member]
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock, Shares \| shares					461,169
Common Stock \| Equity Unit Purchase Agreements
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock, Shares \| shares	4,285,710
Common Stock \| 2019 ATM Facility
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock, Shares \| shares							174,649
Proceeds from issuance of common stock							$ 800,000
Common stock shares maximum aggregate offering price							$ 8,450
Common Stock \| 2020 ATM Facility
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Issuance of common stock, Shares \| shares			0				788,685
Gross Proceeds From Issuance Of Common Stock							$ 10,400,000
Gross proceeds from issuance of common stock							10,400,000
Proceeds from issuance of common stock							10,000,000.0
Common stock shares maximum aggregate offering price		$ 150,000,000
Stock issuance costs							$ 400,000
Common Stock Warrants \| Equity Unit Purchase Agreements
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]
Gross Proceeds From Issuance Of Common Stock	$ 25,000,000
Sale of stock, price per share \| $ / shares	$ 25.00
Gross proceeds from issuance of common stock	$ 25,000,000
Warrants exercisable, per share exercise price \| $ / shares	$ 14.00