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Financial Assets and Liabilities - Summary of Changes in Fair Value of Level 3 Instruments (Details) - USD ($)
$ in Thousands
 3 Months Ended 12 Months Ended
Sep. 30, 2022
Sep. 30, 2021
Jun. 30, 2022
Disclosure Of Financial Instruments [Line Items]      
Remeasurement $ 4,468 $ 280  
Level 3      
Disclosure Of Financial Instruments [Line Items]      
Opening balance 23,284 $ 25,409 $ 25,409
Amount used during the period     (1,212)
Reclassification during the period 2,685    
Remeasurement (4,468)   (913)
Closing balance $ 21,501   $ 23,284