Derivative Financial Instruments (Tables)

12 Months Ended

Sep. 30, 2025

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Outstanding Foreign Currency Forward Contracts

The following tables summarize our outstanding foreign currency forward contracts, by currency, at September 30, 2025 and 2024: 

	September 30, 2025
	Contract Amount				Fair Value
	Foreign Currency		USD		USD
		(In thousands)
Sell foreign currency:
Euro (EUR)	EUR	7,700	$	9,034	—
Buy foreign currency:
British pound (GBP)	GBP	10,019	$	13,500	—
Singapore dollar (SGD)	SGD	8,087	$	6,300	—

	September 30, 2024
	Contract Amount				Fair Value
	Foreign Currency		USD		USD
		(In thousands)
Sell foreign currency:
Euro (EUR)	EUR	13,000	$	14,531	—
Buy foreign currency:
British pound (GBP)	GBP	12,237	$	16,400	—
Singapore dollar (SGD)	SGD	7,404	$	5,800	—

Schedule of Gains on Derivative Financial Instruments

Gains (losses) on derivative financial instruments were recorded in our consolidated statements of income and comprehensive income as a component of other income, net, and consisted of the following: 

	Year Ended September 30,
	2025		2024		2023
	(In thousands)
Gain (loss) on foreign currency forward contracts	$	(425)	$	1,580	$	1,625