INVESTMENTS - Schedule of Investments by Type of Security (Details) - USD ($) $ in Thousands	Sep. 30, 2025	Sep. 30, 2024
Debt Securities, Available-for-sale [Line Items]
Cost	$ 42,257	$ 48,141
Gross Unrealized Gains	68	161
Gross Unrealized Losses	(3)	(8)
Fair Market Value	42,322	48,294
Short-Term | U.S. Government and agency securities, short-term
Debt Securities, Available-for-sale [Line Items]
Cost	998
Gross Unrealized Gains	0
Gross Unrealized Losses	0
Fair Market Value	998
Short-Term | U.S. Treasury, short-term
Debt Securities, Available-for-sale [Line Items]
Cost		3,841
Gross Unrealized Gains		1
Gross Unrealized Losses		(6)
Fair Market Value		3,836
Short-Term | Commercial paper, short-term
Debt Securities, Available-for-sale [Line Items]
Cost	19,575	15,964
Gross Unrealized Gains	1	20
Gross Unrealized Losses	(1)	0
Fair Market Value	19,575	15,984
Short-Term | Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Cost	18,253	17,008
Gross Unrealized Gains	34	56
Gross Unrealized Losses	(2)	0
Fair Market Value	18,285	17,064
Long-Term | Corporate debt securities
Debt Securities, Available-for-sale [Line Items]
Cost	3,431	11,328
Gross Unrealized Gains	33	84
Gross Unrealized Losses	0	(2)
Fair Market Value	$ 3,464	$ 11,410