Fair Value of Financial Instruments (Tables)

6 Months Ended

Mar. 31, 2022

Fair Value Disclosures [Abstract]

Schedule of Fair Value of Financial Instruments

The following table presents financial instruments, other than debt, that we measure at fair value on a recurring basis. See Note 11 of this Report on Form 10-Q for a discussion of our debt. In instances where the inputs used to measure the fair value of an asset fall into more than one level of the hierarchy, we have classified it based on the lowest level input that is significant to the determination of the fair value. 

	Level 1				Level 2				Level 3				Total Fair Value
	March 31, 2022		September 30, 2021		March 31, 2022		September 30, 2021		March 31, 2022		September 30, 2021		March 31, 2022		September 30, 2021
Assets:
Cash and cash equivalents	$	237,685	$	185,979	$	—	$	—	$	—	$	—	$	237,685	$	185,979
Other long-term investments	1,541		1,439		—		—		—		—		1,541		1,439
Derivative financial instruments	—		—		43,027		12,335		—		—		43,027		12,335
Total assets	$	239,226	$	187,418	$	43,027	$	12,335	$	—	$	—	$	282,253	$	199,753
Liabilities:
Derivative financial instruments	—		—		489		3,383		—		—		489		3,383
Total liabilities	$	—	$	—	$	489	$	3,383	$	—	$	—	$	489	$	3,383