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Earnings Per Share (Details) - USD ($)
 3 Months Ended
Oct. 31, 2022
Oct. 31, 2021
Earnings Per Share [Abstract]    
Reduction in weighted average shares as a result of the repurchase of common shares (in shares) 0 0
Weighted average performance shares outstanding during the period that are excluded from EPS calculation 383,000 239,000
Numerator:    
Net loss $ (11,096,000) $ (5,984,000)
Convertible preferred stock issuance costs 0 (4,007,000)
Establishment of initial convertible preferred stock purchase option liability 0 (1,005,000)
Dividend on convertible preferred stock (1,710,000) (235,000)
Numerator for diluted calculation $ (12,806,000) $ (11,231,000)
Denominator:    
Denominator for basic calculation (in shares) 27,830,000 26,426,000
Denominator for diluted calculation (in shares) 27,830,000 26,426,000
Stock-based Awards    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive equity-classified stock-based awards not included in calculation of diluted earnings per share (in shares) 1,169,000 1,525,000
Common Shares Related to Business Acquisition    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive equity-classified stock-based awards not included in calculation of diluted earnings per share (in shares) 324,000 340,000
Common Shares Related to Conversion of Convertible Preferred Stock    
Antidilutive Securities Excluded from Computation of Earnings Per Share [Line Items]    
Antidilutive equity-classified stock-based awards not included in calculation of diluted earnings per share (in shares) 4,460,000 577,000