Fair Value of Financial Instruments (Tables)

3 Months Ended

Dec. 31, 2021

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 December 31, 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	$	—	$	7,625	$	—		$	7,625
Total assets	$	—	$	7,625	$	—		$	7,625
Contingent consideration liabilities:
Current portion		—		—		(247	)		(247	)
Non-current portion		—		—		(2,523	)		(2,523	)
Total liabilities	$	—	$	—	$	(2,770	)	$	(2,770	)

	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	$	—	$	—	$	(6,017	)	$	(6,017	)
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 three months ended December 31, 2021 and 2020

Balance at October 1, 2021	$	6,017
Fair value adjustments		(2,440	)
Payment of contingent consideration		(807	)
Balance at December 31, 2021	$	2,770
Balance at October 1, 2020	$	10,962
Fair value adjustments		(697	)
Payment of contingent consideration		—
Balance at December 31, 2020	$	10,265