Derivative Financial Instruments (Tables)

6 Months Ended

Mar. 31, 2024

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Summary of Outstanding Foreign Currency Forward Contracts

The following tables summarize our outstanding foreign currency forward contracts, by currency, at March 31, 2024 and September 30, 2023:

	March 31, 2024
	Contract Amount				Fair Value
	Foreign Currency		USD		USD
	(In thousands)
Sell foreign currency:
Euro (EUR)	EUR	9,000	$	9,718	$	—
Buy foreign currency:
British pound (GBP)	GBP	9,670	$	12,200	$	—
Singapore dollar (SGD)	SGD	10,487	$	7,800	$	—

	September 30, 2023
	Contract Amount				Fair Value
	Foreign Currency		USD		USD
	(In thousands)
Sell foreign currency:
Euro (EUR)	EUR	12,900	$	13,621	$	—
Buy foreign currency:
British pound (GBP)	GBP	10,700	$	13,100	$	—
Singapore dollar (SGD)	SGD	8,569	$	6,300	$	—

Gains (Losses) on Derivative Financial Instruments

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

	Quarter Ended March 31,				Six Months Ended March 31,
	2024		2023		2024		2023
	(In thousands)
Gains (losses) on foreign currency forward contracts	$	(180)	$	309	$	361	$	1,613