Fair Value of Financial Instruments (Tables)

12 Months Ended

Sep. 30, 2022

Fair Value Disclosures [Abstract]

Fair Value of Company's Short-Term Investment and Contingent Consideration by Valuation Hierarchy

The following tables present the fair value of the Company’s short-term investments and contingent consideration by valuation hierarchy and input (in thousands):

	AS OF SEPTEMBER 30, 2022
	Quoted Prices in Active Markets for Identical Assets  (Level 1)		Significant Other Unobservable (Level 2)		Significant Unobservable (Level 3)		Totals
Short-term investments:
Corporate bonds	$	—	$	894	$	—	$	894
Total assets	$	—	$	894	$	—	$	894
Contingent consideration liabilities	$	—	$	—	$	175	$	175
Total liabilities	$	—	$	—	$	175	$	175

	AS OF SEPTEMBER 30, 2021
	Quoted Prices in Active Markets for Identical Assets  (Level 1)		Significant Other Observable (Level 2)		Significant Unobservable (Level 3)		Totals
Short-term investments:
Corporate bonds	$	—	$	9,496	$	—	$	9,496
Total assets	$	—	$	9,496	$	—	$	9,496
Contingent consideration liabilities:
Current portion	$	—	$	—	$	807	$	807
Non-current portion		—		—		5,210		5,210
Total liabilities	$	—	$	—	$	6,017	$	6,017

Changes in Fair Value of Company Level 3 Financial Instruments

The following table summarizes changes in the fair value of the Company’s Level 3 financial instruments for the fiscal years ended September 30, 2022 and 2021:

Contingent Consideration balance at October 1, 2020	$	10,962
Fair value adjustments		(3,524	)
Payment of contingent consideration		(1,421	)
Balance at September 30, 2021		6,017
Fair value adjustments		(5,035	)
Payment of contingent consideration		(807	)
Balance at September 30, 2022	$	175