STOCKHOLDERS' EQUITY - Reserved Shares of Common Stock for Issuance (Details) - shares	Jun. 30, 2025	Jun. 30, 2024	Jun. 30, 2023
Stock-based compensation activity
Stock options outstanding	3,954,716
Restricted stock units outstanding	179,155
Total reserved shares of common stock for issuance	6,813,009
2017 Employee Stock Purchase Plan (ESPP)
Stock-based compensation activity
Stock available for future grants or issuance	589,695
2005 Stock Incentive Plan
Stock-based compensation activity
Stock options outstanding	3,477,199	3,714,494	4,059,282
Stock available for future grants or issuance	2,089,443