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Employee Stock Purchase Plan - Additional Information (Detail) - 2019 ESPP [Member] - shares
3 Months Ended 6 Months Ended 36 Months Ended
Mar. 31, 2022
Mar. 31, 2022
Mar. 31, 2022
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Ordinary shares, discount rate   10.00%  
Number of ordinary shares issued 53,567 53,567 247,761
Minimum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Eligible employees contribution from their eligible compensation during each semi annual   1.00%  
Maximum [Member]      
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]      
Eligible employees contribution from their eligible compensation during each semi annual   15.00%  
Number of ordinary shares issued   500,000