Quarterly report pursuant to Section 13 or 15(d)

FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS - Fair value on a recurring basis (Details)

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FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS - Fair value on a recurring basis (Details) - USD ($)
$ in Thousands
Mar. 31, 2023
Jun. 30, 2022
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS    
Cash and cash equivalents $ 33,743 $ 150,410
Recurring    
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS    
Financial assets measured at fair value 116,026  
Recurring | Money market funds    
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS    
Cash and cash equivalents 20,497  
Recurring | Corporate commercial paper    
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS    
Marketable debt securities 38,381  
Recurring | U.S. Government agencies    
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS    
Marketable debt securities 24,401  
Recurring | U.S. Government treasuries    
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS    
Marketable debt securities 5,942  
Recurring | Corporate notes and bonds    
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS    
Marketable debt securities 22,032  
Recurring | Asset-backed securities    
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS    
Marketable debt securities 4,773  
Recurring | Level 1    
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS    
Financial assets measured at fair value 26,439  
Recurring | Level 1 | Money market funds    
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS    
Cash and cash equivalents 20,497  
Recurring | Level 1 | U.S. Government treasuries    
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS    
Marketable debt securities 5,942  
Recurring | Level 2    
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS    
Financial assets measured at fair value 89,587  
Recurring | Level 2 | Corporate commercial paper    
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS    
Marketable debt securities 38,381  
Recurring | Level 2 | U.S. Government agencies    
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS    
Marketable debt securities 24,401  
Recurring | Level 2 | Corporate notes and bonds    
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS    
Marketable debt securities 22,032  
Recurring | Level 2 | Asset-backed securities    
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS    
Marketable debt securities $ 4,773