Fair Value Measurements (Tables)

9 Months Ended

Jun. 30, 2021

Fair Value Disclosures [Abstract]

Assets Measured at Fair Value on Recurring Basis

Assets measured at fair value on a recurring basis by level of the fair value hierarchy were as follows:

	June 30, 2021
(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	$	—	$	5,226	$	—	$	5,226
Available-for-sale securities		—		9,791		—		9,791
Total assets	$	—	$	15,017	$	—	$	15,017

	September 30, 2020
(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	$	—	$	18,634	$	—	$	18,634
Available-for-sale securities		—		30,313		—	$	30,313
Total assets	$	—	$	48,947	$	—	$	48,947