Common Stock - Additional Information (Detail) - USD ($)			3 Months Ended
	Feb. 12, 2021	Apr. 08, 2020	Mar. 31, 2021	Dec. 31, 2020	Sep. 04, 2020
Class Of Stock [Line Items]
Common stock, par value			$ 0.0001	$ 0.0001
Purchase Agreement [Member]
Class Of Stock [Line Items]
Common stock shares issued	2,875,000
Sale of stock price per share	$ 7.29
Gross proceeds from issuance of common stock	$ 20,900,000
Private Placement [Member]
Class Of Stock [Line Items]
Common stock shares issued, value			$ 20,866,000
Net Issuance costs			$ 98,000
Private Placement [Member] | Investment Agreement [Member] | Eshelman Ventures [Member] | Unregistered Common Stock [Member]
Class Of Stock [Line Items]
Common stock shares issued		931,098
Common stock shares issued, value		$ 5,000,000
Net Issuance costs		$ 78,000
At The Market Offering Program [Member] | Piper Sandler & Co and Cantor Fitzgerald & Co [Member] | Equity Distribution Agreement [Member]
Class Of Stock [Line Items]
Common stock, par value					$ 0.0001
Number of shares sold			884,649
Net proceeds from shares sold net of discounts and offering costs			$ 7,000,000
At The Market Offering Program [Member] | Piper Sandler & Co and Cantor Fitzgerald & Co [Member] | Equity Distribution Agreement [Member] | Maximum [Member]
Class Of Stock [Line Items]
Aggregate offering price					$ 60,000,000