FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS - Significant Concentrations (Details) - USD ($) $ in Thousands	12 Months Ended
	Jun. 30, 2024	Jun. 30, 2023
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS
Concentration risk, credit risk, uninsured deposits	Financial instruments that subject the Company to concentrations of credit risk consist primarily of cash and cash equivalents and investments in marketable debt securities. The Company maintains its cash in demand accounts at a high-quality financial institution. As of and for the fiscal years ended June 30, 2024 and 2023, cash deposits have exceeded the amount of insurance provided on such deposits by the Federal Deposit Insurance Corporation.
Marketable debt securities	$ 56,741	$ 102,330
Banking and Financial Services Industries
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS
Marketable debt securities	$ 26,600	54,000
U.S. government
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS
Marketable debt securities		$ 26,500