Fair Value Measurements - Schedule of Financial Assets and Liabilities Measured at Fair Value (Details) - USD ($) $ in Thousands		Mar. 31, 2025	Sep. 30, 2024
Financial assets:
Cash equivalents	[1]	$ 73,936	$ 48,509
Derivative Asset Statement of Financial Position Extensible Enumeration		Other assets	Other assets
Financial assets, fair value		$ 79,937	$ 49,711
Financial liabilities:
Financial liabilities, fair value		$ 4,286	$ 4,166
Derivative Liability Statement Of Financial Position Extensible Enumeration		Other liabilities	Other liabilities
Forward Contracts
Financial assets:
Foreign currency contract, asset		$ 6,001	$ 1,202
Financial liabilities:
Foreign currency contracts, liability		4,286	4,166
Level 1
Financial assets:
Cash equivalents	[1]	73,936	48,509
Financial assets, fair value		73,936	48,509
Financial liabilities:
Financial liabilities, fair value		0	0
Level 1 | Forward Contracts
Financial assets:
Foreign currency contract, asset		0	0
Financial liabilities:
Foreign currency contracts, liability		0	0
Level 2
Financial assets:
Cash equivalents	[1]	0	0
Financial assets, fair value		6,001	1,202
Financial liabilities:
Financial liabilities, fair value		4,286	4,166
Level 2 | Forward Contracts
Financial assets:
Foreign currency contract, asset		6,001	1,202
Financial liabilities:
Foreign currency contracts, liability		4,286	4,166
Level 3
Financial assets:
Cash equivalents	[1]	0	0
Financial assets, fair value		0	0
Financial liabilities:
Financial liabilities, fair value		0	0
Level 3 | Forward Contracts
Financial assets:
Foreign currency contract, asset		0	0
Financial liabilities:
Foreign currency contracts, liability		$ 0	$ 0

[1] Money market funds and time deposits.