Fair Value Measures (Tables)

12 Months Ended

Sep. 30, 2019

Fair Value Disclosures [Abstract]

Assets and Liabilities Measured at Fair Value on Recurring Basis

September 30, 2019 and 2018 consisted of (dollars in thousands):

	September 30, 2019
	Level 1		Level 2			Level 3			Total
Assets:
Money market funds (a)	$	217,861	$	—		$	—		$	217,861
Time deposits(b)			115,913			—			115,913
Commercial paper, $77,089 at cost(b)	—		77,494			—			77,494
Corporate notes and bonds, $37,504 at cost(b)			37,566			—			37,566
Foreign currency exchange contracts(b)			597			—			597
Total assets at fair value	$	217,861	$	231,570		$	—		$	449,431
Liabilities:
Foreign currency exchange contracts(b)			$	(327	)				$	(327	)
Contingent acquisition payments(c)						(2,925		)	(2,925		)
Total liabilities at fair value	$	—	$	(327	)	$	(2,925	)	$	(3,252	)

	September 30, 2018
	Level 1		Level 2			Level 3			Total
Assets:
Money market funds(a)	$	200,004	$	—		$	—		$	200,004
Time deposits(b)	—		88,158			—			88,158
Commercial paper, $27,194 at cost(b)	—		27,363			—			27,363
Corporate notes and bonds, $57,563 at cost(b)	—		57,417			—			57,417
Foreign currency exchange contracts(b)	—		143			—			143
Total assets at fair value	$	200,004	$	173,081		$	—		$	373,085
Liabilities:
Foreign currency exchange contracts(b)	$	—	$	(1,192	)	$	—		$	(1,192	)
Contingent acquisition payments(c)	—		—			(4,000		)	(4,000		)
Total liabilities at fair value	$	—	$	(1,192	)	$	(4,000	)	$	(5,192	)

^(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 0.53 years and 0.61 years as of September 30, 2019 and September 30, 2018, respectively.

^(c)

Changes in Fair Value of Level 3 Financial Instruments

e following table provides a summary of changes in fair value of our Level 3 financial instruments for the years ended September 30, 2019 and 2018 (dollars in thousands):

	Amount
Balance as of September 30, 2017	$	8,648
Earn-out liability established at time of acquisition	2,000
Payments and foreign currency translation	(8,188		)
Adjustments to fair value included in acquisition-related costs, net	1,540
Balance as of September 30, 2018	4,000
Earn-out liability established at time of acquisition	1,500
Payments and foreign currency translation	(2,550		)
Adjustments to fair value included in acquisition-related costs, net	(25		)
Balance as of September 30, 2019	$	2,925