v3.23.1
Stock-based compensation expense - Abveris Acquisition (Details) - USD ($)
$ / shares in Units, $ in Thousands
12 Months Ended
Dec. 01, 2021
Sep. 30, 2022
Sep. 30, 2021
Sep. 30, 2020
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Stock based compensation expense   $ 79,033 $ 36,998 $ 17,096
AbX Biologics, Inc.        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Awards aggregate fair value $ 20,100      
Vesting period 2 years      
Performance Shares | AbX Biologics, Inc.        
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]        
Equity awards restricted (in shares) 231,876      
Vest outstanding (in shares)   177,390    
Stock based compensation expense   $ 9,900    
Granted (in dollars per share)   $ 87.06    
Unrecognized compensation cost   $ 5,600    
Recognize cost weighted average period   7 months 6 days