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Stock-Based Compensation (Expenses) (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Oct. 31, 2024 | Oct. 31, 2023 | Jul. 31, 2024
Stock-based Compensation Expenses |  |  |
Stock-based compensation expense before CEO transition costs | $ 155,000 | $ 2,645,000 |
Stock-based compensation expense before income tax benefit | 155,000 | 2,645,000 |
Estimated Income tax benefit | (20,000) | (584,000) |
Net stock-based compensation expense | 135,000 | 2,061,000 |
Total remaining unrecognized compensation cost related to the unvested stock-based awards | 9,923,000 |  |
Estimated forfeitures related to unvested stock-based awards | $ 708,000 |  |
Weighted average number of years net compensation cost is expected to be recognized over | 2 years 1 month 6 days |  |
Stock-based compensation capitalized and included in ending inventory | $ 198,000 |  | $ 198,000
Stock options |  |  |
Stock-based Compensation Expenses |  |  |
Stock-based compensation expense before CEO transition costs | $ 17,000 | 19,000 |
Number of stock-based awards outstanding at period end (in shares) | 141,190 |  | 141,190
Performance shares |  |  |
Stock-based Compensation Expenses |  |  |
Stock-based compensation expense before CEO transition costs | $ (397,000) | 357,000 |
RSUs and restricted stock |  |  |
Stock-based Compensation Expenses |  |  |
Stock-based compensation expense before CEO transition costs | 521,000 | 2,244,000 |
ESPP |  |  |
Stock-based Compensation Expenses |  |  |
Stock-based compensation expense before CEO transition costs | $ 14,000 | 25,000 |
Discount offered to employees participating in the ESPP as a percentage of market price | 15.00% |  |
2000 Stock Incentive Plan | Stock options |  |  |
Stock-based Compensation Expenses |  |  |
Number of stock-based awards outstanding at period end (in shares) | 141,190 |  |
Cost of sales |  |  |
Stock-based Compensation Expenses |  |  |
Stock-based compensation expense before CEO transition costs | $ 104,000 | 282,000 |
Selling, general and administrative expenses |  |  |
Stock-based Compensation Expenses |  |  |
Stock-based compensation expense before CEO transition costs | (14,000) | 2,176,000 |
Research and development expenses |  |  |
Stock-based Compensation Expenses |  |  |
Stock-based compensation expense before CEO transition costs | $ 65,000 | $ 187,000 |

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