Fair Value Measurements (Tables)

9 Months Ended

Jun. 30, 2022

Fair Value Disclosures [Abstract]

Fair Value Measurements for Assets and Liabilities Measured at Fair Value on Recurring Basis

The following table summarizes fair value measurements at June 30, 2022 and September 30, 2021 for assets and liabilities measured at fair value on a recurring basis:

June 30, 2022:

	Level 1		Level 2		Level 3		Total
	(in thousands)
Classified as Cash and cash equivalents
Commercial Notes	$	—	$	25,336	$	—	$	25,336
Classified as Marketable Securities
Marketable securities	$	—	$	—	$	—	$	—
Classified as Held to Maturity
Short-term investments	$	—	$	225,490	$	—	$	225,490
Long-term investments	$	—	$	159,540	$	—	$	159,540
Certificate of deposits	$	50,000	$	—	$	—	$	50,000
Classified as Contingent Consideration
Contingent consideration	$	—	$	—	$	—	$	—

September 30, 2021:

	Level 1		Level 2		Level 3		Total
	(in thousands)
Classified as Marketable Securities
Marketable securities	$	126,728	$	—	$	—	$	126,728
Classified as Held to Maturity
Short-term investments	$	—	$	57,430	$	—	$	57,430
Long-term investments	$	—	$	196,643	$	—	$	196,643
Certificate of deposit	$	50,000	$	—	$	—	$	50,000
Classified as Contingent Consideration
Contingent consideration	$	—	$	—	$	—	$	—