Summary of Significant Accounting and Reporting Policies (Earnings Per Share) (Details) - USD ($)	12 Months Ended
	Jul. 31, 2023	Jul. 31, 2022	Jul. 31, 2021
Accounting Policies [Abstract]
Reduction in weighted average shares as a result of the repurchase of common shares (in shares)	0	0	0
Weighted average performance shares outstanding during the period that are excluded from EPS calculation	385,000	293,000	232,000
Numerator:
Net loss	$ (26,899,000)	$ (33,052,000)	$ (73,480,000)
Convertible preferred stock issuance costs	0	(4,007,000)	0
Establishment of initial convertible preferred stock purchase option liability	0	(1,005,000)	0
Dividend on convertible preferred stock	(7,007,000)	(5,204,000)	0
Numerator for diluted calculation	$ (33,906,000)	$ (43,268,000)	$ (73,480,000)
Denominator:
Denominator for basic calculation (in shares)	28,002,000	26,506,000	25,685,000
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)	972,000	1,656,000	1,440,000
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)	260,000	591,000	82,000
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)	4,570,000	3,342,000