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SUMMARY OF BUSINESS AND SIGNIFICANT ACCOUNTING POLICIES - ESPP and Stock Option Awards (Details) - USD ($)
3 Months Ended
Jun. 01, 2025
Jun. 01, 2024
Sep. 30, 2025
Sep. 30, 2024
Assumptions        
Dividend yield     0.00%  
Employee Stock Option        
Stock-based awards        
Options granted during period     115,700 26,700
Options granted during period, weighted-average price (in dollars per share)     $ 3.65 $ 3.52
Total unrecognized compensation cost, net of forfeitures, related to unvested options     $ 894,000  
Weighted average period over which unrecognized compensation is expected to be recognized     1 year 7 months 6 days  
Issuance of common stock upon exercise of stock options (in shares)     62,106 32,317
Assumptions        
Expected volatility     51.00% 55.00%
Average risk-free interest rate     3.80% 3.79%
Expected life (in years)     4 years 6 months 7 days 4 years 6 months 21 days
Dividend yield     0.00% 0.00%
2017 Employee Stock Purchase Plan (ESPP)        
ESPP        
Percentage of stock price at which stock can be purchased     85.00%  
Purchase period     6 months  
ESPP purchase rights granted 82,635 90,792    
ESPP shares issued     0 0
ESPP shares available for issuance     589,695  
2017 Employee Stock Purchase Plan (ESPP) | Minimum        
ESPP        
Percentage of base earnings that can be withheld     1.00%  
2017 Employee Stock Purchase Plan (ESPP) | Maximum        
ESPP        
Offering period     27 months  
Percentage of base earnings that can be withheld     15.00%  
Restricted stock units        
Stock-based awards        
Total unrecognized compensation cost, net of forfeitures, related to unvested options     $ 125,000  
RSUs granted     0 0
Assumptions        
Expected life (in years)     1 month 6 days