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FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS - Fair Value on a Recurring Basis (Details) - USD ($) $ in Thousands | Mar. 31, 2024 | Jun. 30, 2023
--- | --- | ---
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS |  |
Marketable debt securities | $ 75,665 | $ 102,330
Recurring |  |
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS |  |
Financial assets measured at fair value | 79,116 | 112,274
Recurring | Money market funds |  |
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS |  |
Cash and cash equivalents | 3,451 | 5,464
Recurring | Corporate commercial paper |  |
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS |  |
Cash and cash equivalents |  | 4,481
Marketable debt securities | 22,565 | 41,597
Recurring | U.S. Government agencies |  |
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS |  |
Marketable debt securities | 11,313 | 26,394
Recurring | U.S. Government treasuries |  |
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS |  |
Marketable debt securities | 995 | 10,404
Recurring | Corporate notes and bonds |  |
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS |  |
Marketable debt securities | 38,439 | 19,240
Recurring | Asset-backed securities |  |
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS |  |
Marketable debt securities | 2,353 | 4,694
Recurring | Level 1 |  |
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS |  |
Financial assets measured at fair value | 3,451 | 20,349
Recurring | Level 1 | Money market funds |  |
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS |  |
Cash and cash equivalents | 3,451 | 5,464
Recurring | Level 1 | Corporate commercial paper |  |
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS |  |
Cash and cash equivalents |  | 4,481
Recurring | Level 1 | U.S. Government treasuries |  |
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS |  |
Marketable debt securities |  | 10,404
Recurring | Level 2 |  |
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS |  |
Financial assets measured at fair value | 75,665 | 91,925
Recurring | Level 2 | Corporate commercial paper |  |
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS |  |
Marketable debt securities | 22,565 | 41,597
Recurring | Level 2 | U.S. Government agencies |  |
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS |  |
Marketable debt securities | 11,313 | 26,394
Recurring | Level 2 | U.S. Government treasuries |  |
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS |  |
Marketable debt securities | 995 |
Recurring | Level 2 | Corporate notes and bonds |  |
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS |  |
Marketable debt securities | 38,439 | 19,240
Recurring | Level 2 | Asset-backed securities |  |
FINANCIAL INSTRUMENTS AND SIGNIFICANT CONCENTRATIONS |  |
Marketable debt securities | $ 2,353 | $ 4,694

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