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Stock-Based Compensation Expense - Additional Information (Detail) - USD ($)
3 Months Ended 6 Months Ended
Mar. 31, 2022
Mar. 31, 2021
Jun. 30, 2022
Jun. 30, 2021
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Issuance of common stock under Employee Stock Purchase Plan $ 740,000 $ 390,000    
Common Stock        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Issuance of common stock under Employee Stock Purchase Plan $ 2,000 $ 3,000    
Issuance of common stock under Employee Stock Purchase Plan (in shares) 233,000 293,000 233,401 292,981
ESPP        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Common stock available for issuance     900,000  
Employees Awards        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Issuance of common stock under Employee Stock Purchase Plan     $ 25,000  
Issuance of common stock under Employee Stock Purchase Plan (in shares)     5,000  
Employees Awards | ESPP        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Discount on purchase price percentage of fair market value     85.00%  
Options and PNQs        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Unrecognized compensation expense related to options     $ 1,600,000  
Unrecognized compensation expense, weighted average period for recognition     2 years 9 months 25 days  
RSUs        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Unrecognized compensation expense, weighted average period for recognition     2 years 11 months 1 day  
Unrecognized compensation expense related to non-option     $ 14,500,000  
Market RSU's        
Share Based Compensation Arrangement By Share Based Payment Award [Line Items]        
Unrecognized compensation expense, weighted average period for recognition     1 year 9 months 21 days  
Unrecognized compensation expense related to non-option     $ 15,300,000