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Stockholders' Equity - Stock Options and Employee Stock Purchase Plan - Additional Information (Detail) - USD ($)
 12 Months Ended
Feb. 22, 2022
Oct. 07, 2021
Mar. 08, 2021
Mar. 31, 2023
Mar. 31, 2022
Class Of Stock [Line Items]          
Revenue recognized $ 1,500,000     $ 370,000 $ 1,500,000
Vesting criteria probability of achievement percentage       0.00%  
Expense recorded       $ 0  
Weighted-average remaining contractual term of stock options exercisable       8 years  
Weighted-average remaining contractual term of stock options outstanding       8 years  
Issuance of common stock from stock options exercises, net, Shares       0 0
Number of common stock shares approved under ESPP       2,709,831  
Expected life of options       6 years 5 years 9 months
Number of stock options vested       0  
Aforementioned Officer One [Member]          
Class Of Stock [Line Items]          
Stock options granted   120,000      
Aforementioned Officer Two [Member]          
Class Of Stock [Line Items]          
Stock options granted   25,000      
Equity Incentive Plan 2022 [Member]          
Class Of Stock [Line Items]          
Stock options granted       255,474  
Number of common stock shares approved under ESPP       1,071,471  
2012 Plan [Member]          
Class Of Stock [Line Items]          
Stock options granted       255,474  
2012 Plan [Member] | Executive Chairman [Member]          
Class Of Stock [Line Items]          
Stock options granted   60,000 120,000    
2012 Plan [Member] | Chief Scientific Officer [Member]          
Class Of Stock [Line Items]          
Stock options granted   15,000 25,000    
2016 Employee Stock Purchase Plan [Member]          
Class Of Stock [Line Items]          
Number of common stock shares approved under ESPP       75,000  
Employee subscription rate       15.00%  
Compensation amount per employee       $ 25,000  
Fair market value at discount       85.00%  
Purchase period       6 months  
Initial offering period       2016-09  
Description of plan       Shares under the ESPP are purchased at 85 percent of the fair market value at the lower of (i) the closing price on the first trading day of the six-month purchase period or (ii) the closing price on the last trading day of the six-month purchase period.  
Shares issued under ESPP       1,009  
Shares remaining available for purchase under ESPP       58,426