Fair Value Measurements (Tables)

6 Months Ended

Mar. 31, 2021

Fair Value Disclosures [Abstract]

Schedule of financial assets and liabilities and other fair value disclosures by fair value hierarchy

Fair value on recurring basis

Consistent with the three-level hierarchy defined in ASC Topic 820, Fair Value Measurement, as amended, we categorize our financial assets and liabilities as follows (in thousands):

	Classification	Fair Value Hierarchy Level	March 31, 2021		September 30, 2020
Financial Assets:
Cash equivalents	Cash and cash equivalents	Level 1	$	—	$	194,612
Foreign exchange contracts	Other current assets	Level 2		20		—
Interest rate caps	Other assets	Level 2		18		27
Total assets			$	38	$	194,639
.
Financial Liabilities:
Foreign exchange contracts	Accrued liabilities	Level 2	$	516	$	—

Other fair value disclosures

		March 31, 2021				September 30, 2020
	Fair Value Hierarchy Level	Carrying Value		Fair Value		Carrying Value		Fair Value
Long-term debt, excluding capital leases
Senior notes	Level 1	$	1,177,380	$	1,234,481	$	1,177,380	$	1,217,707
Term loan B	Level 2		422,625		421,040		635,788		619,397
Total long-term debt		$	1,600,005	$	1,655,521	$	1,813,168	$	1,837,104