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Stock Option - Fair Value Assumptions (Details)
9 Months Ended
Mar. 31, 2023
Mar. 31, 2022
2012 Employee Stock Option Plan    
Stock option    
Risk-free interest rates 3.03% 1.64%
Expected lives 7 years 3 months 7 days 6 years 2 months 4 days
Expected volatility 43.00% 43.00%
Expected dividend yields 0.00% 0.00%
2012 Non-Employee Stock Option Plan    
Stock option    
Risk-free interest rates   1.68%
Expected lives   6 years 2 months 4 days
Expected volatility   43.00%
Expected dividend yields   0.00%
2018 Non-Employee Stock Option Plan    
Stock option    
Risk-free interest rates   1.68%
Expected lives   6 years 2 months 4 days
Expected volatility   43.00%
Expected dividend yields   0.00%
2020 Non-Employee Stock Option Plan    
Stock option    
Risk-free interest rates, min 3.03%  
Risk-free interest rates, max 3.40%  
Risk-free interest rates   1.68%
Expected lives   6 years 2 months 4 days
Expected volatility 43.00% 43.00%
Expected dividend yields 0.00% 0.00%
2020 Non-Employee Stock Option Plan | Minimum    
Stock option    
Expected lives 7 years 2 months 23 days  
2020 Non-Employee Stock Option Plan | Maximum    
Stock option    
Expected lives 7 years 3 months 7 days