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Stock-Based Compensation (Tables)
 9 Months Ended
Apr. 30, 2025
Share-Based Payment Arrangement [Abstract]  
Summary of stock-based awards outstanding by award type
As of April 30, 2025, the following stock-based awards, by award type, were outstanding:
 April 30, 2025
Stock options125,470 
Performance shares666,173 
RSUs, restricted stock, share units and other stock-based awards1,167,331 
Total1,958,974 
Stock-based compensation for awards detailing where recorded in Consolidated Statement of Operations
Stock-based compensation for awards issued is reflected in the following line items in our Condensed Consolidated Statements of Operations:
 Three months ended April 30,Nine months ended April 30,
 2025202420252024
Cost of sales$99,000 67,000 $299,000 480,000 
Selling, general and administrative expenses1,033,000 313,000 2,033,000 4,480,000 
Research and development expenses63,000 24,000 188,000 278,000 
Stock-based compensation expense before income tax benefit1,195,000 404,000 2,520,000 5,238,000 
Estimated income tax benefit(252,000)(81,000)(516,000)(1,149,000)
Net stock-based compensation expense$943,000 323,000 $2,004,000 4,089,000 
Summary of stock-based compensation expense by award type
Stock-based compensation expense, by award type, is summarized as follows:
Three months ended April 30,Nine months ended April 30,
2025202420252024
Stock options$6,000 11,000 $26,000 42,000 
Performance shares384,000 (662,000)289,000 280,000 
RSUs, restricted stock and share units794,000 1,040,000 2,165,000 4,850,000 
ESPP11,000 15,000 40,000 66,000 
Stock-based compensation expense before income tax benefit1,195,000 404,000 2,520,000 5,238,000 
Estimated income tax benefit(252,000)(81,000)(516,000)(1,149,000)
Net stock-based compensation expense$943,000 323,000 $2,004,000 4,089,000 
Summary of the Plan's activity relating to stock options
The following table summarizes the Plan's activity:
 Awards
(in Shares)		Weighted Average
Exercise Price		Weighted Average
Remaining Contractual
Term (Years)		Aggregate
Intrinsic Value
Outstanding at July 31, 2024141,190 $20.61   
Outstanding at October 31, 2024141,190 20.61 
Expired/canceled(5,500)17.88   
Outstanding at January 31, 2025135,690 20.72   
Expired/canceled(10,220)23.23 
Outstanding at April 30, 2025125,470 $20.51 3.80$— 
Exercisable at April 30, 2025119,220 $20.65 3.73$— 
Vested and expected to vest at April 30, 2025125,395 $20.51 3.80$— 
Summary of the Plan's activity relating to performance shares, RSUs, restricted stock and share units
The following table summarizes the Plan's activity relating to performance shares, RSUs, restricted stock, share units and other stock-based awards:
  Awards
(in Shares)		Weighted Average
Grant Date
Fair Value
Aggregate
Intrinsic Value
Outstanding at July 31, 2024 1,800,288 $10.61 
Granted 1,154,859 5.04 
Settled (204,292)11.26 
Canceled/Forfeited (128,892)10.61 
Outstanding at October 31, 2024 2,621,963 8.11 
Granted 489,191 3.63 
Settled (578,751)9.41 
Canceled/Forfeited (643,012)5.48 
Outstanding at January 31, 20251,889,391 6.61 
Granted33,627 1.79 
Settled(6,970)10.95 
Canceled/Forfeited(82,544)2.74 
Outstanding at April 30, 2025 1,833,504 $6.68 $2,512,000 
  
Vested at April 30, 2025 122,554 $13.23 $168,000 
  
Vested and expected to vest at April 30, 2025 1,766,255 $6.67 $2,420,000