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General (Details)			3 Months Ended			6 Months Ended		12 Months Ended
	Jan. 22, 2024 USD ($)	Aug. 09, 2022 USD ($)	Jan. 31, 2024 USD ($)	Oct. 31, 2023 USD ($)	Jan. 31, 2023 USD ($)	Jan. 31, 2024 USD ($) segment	Jan. 31, 2023 USD ($)	Jul. 31, 2023 USD ($) segment	Jul. 31, 2022 USD ($)	Jul. 31, 2021 USD ($)	Jul. 31, 2024 USD ($)	Apr. 30, 2024 USD ($)	Mar. 18, 2024 USD ($)	Nov. 07, 2023 USD ($)	Nov. 30, 2022 USD ($)
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Operating income (loss)			$ 2,973,000		$ (781,000)	$ 5,059,000	$ (10,505,000)	$ (14,660,000)	$ (33,752,000)	$ (68,298,000)
Gain on business divestiture, net			2,213,000		0	2,213,000	0
Net cash used in operating activities						41,205,000	16,786,000	4,433,000	$ (1,997,000)	$ 40,638,000
Net loss			10,558,000		4,805,000	11,995,000	15,901,000
Cash and cash equivalents			39,956,000			$ 39,956,000		$ 18,961,000
Number of operating segments | segment						2		2
Transition costs			0		0	$ 0	9,090,000
CEO transition costs related to equity-classified stock-based awards			0		$ 0	0	$ 3,764,000
Severance costs						$ 1,155,000		$ 3,872,000
Subsequent Event
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash and cash equivalents													$ 20,100,000
Series B Preferred Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Convertible preferred stock	$ 45,000,000
Convertible preferred stock	$ 50,000,000
Former CEO
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Transition costs		$ 7,424,000
CEO transition costs related to equity-classified stock-based awards		3,764,000
Severance costs		3,660,000
Cash portion of transition costs		3,660,000
President and CEO
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Cash sign-on bonus		$ 1,000,000
Credit Facility
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Borrowings under credit facility													166,241,000
Actual secured leverage ratio						3.07
Maximum secured leverage ratio						3.50
Actual interest expense coverage ratio						3.34
Minimum interest expense coverage ratio						3.25
Minimum liquidity			39,500,000			$ 39,500,000									$ 25,000,000
Credit Facility | Revolving Loan Facility
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Line of credit facility, maximum borrowing capacity			140,000,000			140,000,000								$ 150,000,000
Remaining borrowing capacity													2,665,000
Credit Facility | Revolving Loan Facility | Forecast
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Line of credit facility, maximum borrowing capacity												$ 140,000,000
Credit Facility | Line of Credit | Revolving Loan Facility
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Borrowings under credit facility													136,854,000
Credit Facility | Line of Credit | Term Loan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Borrowings under credit facility													$ 29,387,000
Line of credit facility, maximum borrowing capacity														$ 200,000,000
Line of credit facility, quarterly amortization			$ 1,875,000	$ 1,250,000		$ 1,875,000
Credit Facility | Line of Credit | Term Loan | Forecast
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Line of credit facility, maximum borrowing capacity											$ 130,000,000	$ 135,000,000

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