Derivative Financial Instruments (Tables)

3 Months Ended

Dec. 31, 2023

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 December 31, 2023 and September 30, 2023:

	December 31, 2023
	Contract Amount				Fair Value
	Foreign Currency		USD		USD
	(In thousands)
Sell foreign currency:
Euro (EUR)	EUR	9,900	$	10,941	$	—
Buy foreign currency:
British pound (GBP)	GBP	9,911	$	12,600	$	—
Singapore dollar (SGD)	SGD	10,400	$	7,900	$	—

	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 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 December 31,
	2023		2022
	(In thousands)
Gains on foreign currency forward contracts	$	541	$	1,304