v3.26.1
INVESTMENTS - Schedule of Investments by Type of Security (Details) - USD ($)
$ in Thousands
Jun. 30, 2026
Sep. 30, 2025
Debt Securities, Available-for-sale [Line Items]    
Cost $ 10,125 $ 42,257
Gross Unrealized Gains 0 68
Gross Unrealized Losses (9) (3)
Fair Market Value 10,116 42,322
Balance Sheet Location [Axis]: us-gaap:LongTermInvestments | Corporate debt securities    
Debt Securities, Available-for-sale [Line Items]    
Cost 451 3,431
Gross Unrealized Gains 0 33
Gross Unrealized Losses (1) 0
Fair Market Value 450 3,464
Balance Sheet Location [Axis]: us-gaap:ShortTermInvestments | 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
Balance Sheet Location [Axis]: us-gaap:ShortTermInvestments | Commercial paper, short-term    
Debt Securities, Available-for-sale [Line Items]    
Cost 7,126 19,575
Gross Unrealized Gains 0 1
Gross Unrealized Losses (7) (1)
Fair Market Value 7,119 19,575
Balance Sheet Location [Axis]: us-gaap:ShortTermInvestments | Corporate debt securities    
Debt Securities, Available-for-sale [Line Items]    
Cost 2,548 18,253
Gross Unrealized Gains 0 34
Gross Unrealized Losses (1) (2)
Fair Market Value $ 2,547 $ 18,285