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Stockholders' Equity - Common Stock - Additional Information (Detail) - USD ($)
 3 Months Ended 12 Months Ended
Oct. 12, 2022
Mar. 31, 2023
Mar. 31, 2022
Jul. 25, 2022
Feb. 28, 2022
Oct. 31, 2021
Mar. 31, 2021
Jan. 29, 2021
Jan. 19, 2021
Jul. 31, 2018
Aug. 31, 2015
Aug. 31, 2013
Jan. 31, 2012
Class Of Stock [Line Items]                          
Securities authorized for offer and sale, amount                 $ 150,000,000.0        
Issuance of common stock from stock options exercises, net, Shares   0 0                    
IPO [Member]                          
Class Of Stock [Line Items]                          
Securities authorized for offer and sale, amount   $ 100,000,000.0                      
2018 Sales Agreement [Member]                          
Class Of Stock [Line Items]                          
Equity sales agreement expiration date   Feb. 22, 2021                      
ATM Prospectus Supplement [Member]                          
Class Of Stock [Line Items]                          
Issuance of common stock from stock options exercises, net, Shares   1,580,862                      
Value of shares sold under equity distribution agreement   $ 21,700,000                      
ATM Prospectus Supplement [Member] | At-The-Market Facility [Member]                          
Class Of Stock [Line Items]                          
Common stock value reserved for future issuance   $ 28,300,000                      
Issuance of common stock from stock options exercises, net, Shares   0                      
ATM Prospectus Supplement [Member] | At-The-Market Facility [Member] | Maximum [Member]                          
Class Of Stock [Line Items]                          
Common stock value reserved for future issuance               $ 50,000,000.0          
2021 Shelf [Member]                          
Class Of Stock [Line Items]                          
Common stock value reserved for future issuance   $ 100,000,000.0                      
Equity Incentive Plan 2012 [Member]                          
Class Of Stock [Line Items]                          
Common shares authorized to be issued 1,236,738         900,000       550,000 300,000 250,000 327,699
Shares available for issuance                   2,327,699      
Termination period of Equity Incentive Plan   10 years                      
Common stock shares issued 126,262                        
Inducement Award Agreements [Member]                          
Class Of Stock [Line Items]                          
Common shares authorized to be issued         50,000                
2021 Inducement Equity Plan [Member]                          
Class Of Stock [Line Items]                          
Common shares authorized to be issued             750,000            
Equity Incentive Plan 2022 [Member]                          
Class Of Stock [Line Items]                          
Common shares authorized to be issued 1,363,000     750,000                  
Excercise price per share $ 2.75                        
Equity Incentive Plan 2022 [Member] | Common Stock [Member]                          
Class Of Stock [Line Items]                          
Common shares authorized to be issued 50,000                        
Equity Incentive Plan 2022 [Member] | Common Stock [Member] | Maximum [Member]                          
Class Of Stock [Line Items]                          
Common shares authorized to be issued 51,000                        
2022 Inducement Equity Plan [Member]                          
Class Of Stock [Line Items]                          
Common shares authorized to be issued 1,000