Fair Value Measurements (Tables)

6 Months Ended

Mar. 31, 2020

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 by level of the fair value hierarchy were as follows:

	March 31, 2020
(Dollars in thousands)	Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)		Total Fair Value
Assets
Cash equivalents	$	—	$	10,394	$	—	$	10,394
Available-for-sale securities		—		33,190		—		33,190
Total assets	$	—	$	43,584	$	—	$	43,584

	September 30, 2019
(Dollars in thousands)	Quoted Prices in Active Markets for Identical Instruments (Level 1)		Significant Other Observable Inputs (Level 2)		Significant Unobservable Inputs (Level 3)			Total Fair Value
Assets
Cash equivalents	$	—	$	24,375	$	—		$	24,375
Available-for-sale securities		—		24,931		—		$	24,931
Total assets	$	—	$	49,306	$	—		$	49,306
Liabilities
Contingent consideration	$	—	$	—	$	(3,200	)	$	(3,200	)
Total liabilities	$	—	$	—	$	(3,200	)	$	(3,200	)

Schedule of Contingent Consideration Liabilities Measured at Fair Value

Changes in the contingent consideration liabilities measured at fair value using Level 3 inputs were as follows:

	Three Months Ended					Six Months Ended
	March 31,					March 31,
(Dollars in thousands)	2020		2019			2020			2019
Beginning balance	$	—	$	3,326		$	3,200		$	14,466
Additions		—		—			—			—
Fair value adjustments		—		(362	)		—			(511	)
Settlements		—		—			(3,200	)		(10,979	)
Interest accretion		—		45			—			159
Foreign currency translation loss (gain)		—		—			—			(126	)
Ending balance	$	—	$	3,009		$	—		$	3,009