Derivative Financial Instruments (Tables)

12 Months Ended

Sep. 30, 2021

Derivative Instruments and Hedging Activities Disclosure [Abstract]

Schedule of Derivative Instruments

The notional amounts of our derivative instruments are as follows:

	September 30,
	2021		2020
Derivatives designated as hedging instruments
Interest rate swap contract - new agreement	$	555,210	$	—
Interest rate swap contract - terminated agreement	—		571,000
Derivatives not designated as hedging instruments
Foreign exchange contracts to purchase U.S. dollars	$	4,225	$	8,054
Foreign exchange contracts to sell U.S. dollars	23,235		25,105

Fair Value of Derivative Instruments Included in the Consolidated Balance Sheet

The fair values of our derivative instruments included in the Consolidated Balance Sheets are as follows:

	Consolidated Balance Sheets Location	Derivative Assets				Derivative Liabilities
		September 30,				September 30,
		2021		2020		2021		2020
Derivatives designated as hedging instruments
Interest rate swap contract	Other long-term assets	$	12,335	$	—	$	—	$	—
	Accrued expenses and other current liabilities	—		—		2,995		11,992
	Other long-term liabilities	—		—		—		26,000
Derivatives not designated as hedging instruments
Foreign exchange contracts	Prepaid expenses and other current assets	$	—	$	27	$	—	$	—
	Accrued expenses and other current liabilities	—		—		388		165

Summary of Effect of Derivative Instruments on the Consolidated Statements of Income and Other Comprehensive Income

The following table summarizes the effects of our derivative instrument on our Consolidated Statements of (Loss) Income:

	Consolidated Statements of (Loss) Income Location	(Loss) Gain Recognized in Consolidated Statements of (Loss) Income
		Year Ended September 30,
		2021		2020		2019
Derivatives designated as hedging instruments
Interest rate swap contract	Interest expense, net	$	(4,835)	$	(9,360)	$	524
Terminated interest rate swap contract	Interest expense, net	(9,287)		—		—
Derivatives not designated as hedging instruments
Foreign exchange contracts	Other expense, net	$	(794)	$	(222)	$	28

The following table summarizes the effects of our derivative instrument on Accumulated other comprehensive income (loss):

	Amount of Gain (Loss) Recognized in Other Comprehensive Income (Loss)
	Year Ended September 30,
	2021		2020		2019
Derivatives designated as hedging instruments
Interest rate swap contract	$	7,184	$	(23,161)	$	(23,667)