Stockholders' Equity - Shares of Common Stock Reserved for Future Issuance (Detail) - shares	Mar. 31, 2022	Dec. 31, 2021
Class of Stock [Line Items]
Total common stock reserved for future issuance	8,240,586	6,429,819
Authorized for future option grants [Member]
Class of Stock [Line Items]
Total common stock reserved for future issuance	1,500,358	1,169,523
Common stock warrants [Member]
Class of Stock [Line Items]
Total common stock reserved for future issuance	109,309	109,309
Common stock authorized for the ESPP [Member]
Class of Stock [Line Items]
Total common stock reserved for future issuance	60,948	60,948
Stock options issued and outstanding for all plans [Member]
Class of Stock [Line Items]
Total common stock reserved for future issuance	5,584,764	4,051,572
RSUs outstanding [Member]
Class of Stock [Line Items]
Total common stock reserved for future issuance	692,408	745,668
Convertible preferred stock
Class of Stock [Line Items]
Total common stock reserved for future issuance	292,799	292,799