Fair Value Measurements (Tables)

3 Months Ended

Dec. 31, 2021

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

Assets and liabilities measured at fair value on a recurring basis as of December 31, 2021 and September 30, 2021 consisted of the following (dollars in thousands):

	December 31, 2021
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds (a)	$	60,144	$	—	$	—	$	60,144
Time deposits (b)	—		1,000		—		1,000
Foreign currency exchange contracts (b)	—		129		—		129
Total assets at fair value	$	60,144	$	1,129	$	—	$	61,273
Liabilities:
Foreign currency exchange contracts (b)	$	—	$	(105)	$	—	$	(105)
Total liabilities at fair value	$	—	$	(105)	$	—	$	(105)

	September 30, 2021
	Level 1		Level 2		Level 3		Total
Assets:
Money market funds (a)	$	113,186	$	—	$	—	$	113,186
Time deposits (b)	—		13,889		—		13,889
Commercial paper, $18,633 at cost (b)	—		18,668		—		18,668
Foreign currency exchange contracts (b)	—		112		—		112
Total assets at fair value	$	113,186	$	32,669	$	—	$	145,855
Liabilities:
Foreign currency exchange contracts (b)	$	—	$	(49)	$	—	$	(49)
Total liabilities at fair value	$	—	$	(49)	$	—	$	(49)

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(a)Money market funds and time deposits with original maturity of 90 days or less are included within cash and cash equivalents in the consolidated balance sheets and are valued at quoted market prices in active markets.

(b)Time deposits, commercial paper, corporate notes and bonds, and foreign currency exchange contracts are recorded at fair market values, which are determined based on the most recent observable inputs for similar instruments in active markets or quoted prices for identical or similar instruments in markets that are not active or are directly or indirectly observable. Time deposits are generally for terms of one year or less. Commercial paper and corporate notes and bonds generally mature within three years and had a weighted average maturity of 0.21 years as of September 30, 2021.

Changes in Fair Value of Contingent Earn-Out Liabilities

The following table provides a summary of changes in the aggregate fair value of the contingent acquisition payments for all periods presented (dollars in thousands):

	Three Months Ended December 31,
	2021		2020
Balance at beginning of period	$	—	$	1,796
Payments and foreign currency translation	—		51
Balance at end of period	$	—	$	1,847