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Stock-Based Compensation (Expenses) (Details) - USD ($) | 3 Months Ended |
--- | --- | ---
Oct. 31, 2023 | Oct. 31, 2022 | Jul. 31, 2023
Stock-based Compensation Expenses |  |  |
Stock-based compensation expense before CEO transition costs | $ 2,645,000 | $ 904,000 |
CEO transition costs related to equity-classified stock-based awards | 0 | 3,764,000 |
Total stock-based compensation expense before income tax benefit | 2,645,000 | 4,668,000 |
Estimated Income tax benefit | (584,000) | (493,000) |
Net stock-based compensation expense | 2,061,000 | 4,175,000 |
Total remaining unrecognized compensation cost related to the unvested stock-based awards | 13,988,000 |  |
Estimated forfeitures related to unvested stock-based awards | $ 803,000 |  |
Weighted average number of years net compensation cost is expected to be recognized over | 2 years 3 months 18 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 | $ 19,000 | 25,000 |
Number of stock-based awards outstanding at period end (in shares) | 234,260 |  | 240,510
Performance shares |  |  |
Stock-based Compensation Expenses |  |  |
Stock-based compensation expense before CEO transition costs | $ 357,000 | 74,000 |
RSUs and restricted stock |  |  |
Stock-based Compensation Expenses |  |  |
Stock-based compensation expense before CEO transition costs | 2,244,000 | 774,000 |
ESPP |  |  |
Stock-based Compensation Expenses |  |  |
Stock-based compensation expense before CEO transition costs | $ 25,000 | 31,000 |
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) | 234,260 |  |
2000 Stock Incentive Plan | Stock appreciation rights (SARs) |  |  |
Stock-based Compensation Expenses |  |  |
Number of stock-based awards outstanding at period end (in shares) | 0 |  | 0
Cost of sales |  |  |
Stock-based Compensation Expenses |  |  |
Stock-based compensation expense before CEO transition costs | $ 282,000 | 158,000 |
Selling, general and administrative expenses |  |  |
Stock-based Compensation Expenses |  |  |
Stock-based compensation expense before CEO transition costs | 2,176,000 | 648,000 |
Research and development expenses |  |  |
Stock-based Compensation Expenses |  |  |
Stock-based compensation expense before CEO transition costs | $ 187,000 | $ 98,000 |

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