Convertible Preferred Stock (Details) - USD ($)							3 Months Ended			9 Months Ended		12 Months Ended
	Mar. 03, 2025	Oct. 17, 2024	Jun. 17, 2024	Jan. 22, 2024	Dec. 13, 2023	Oct. 19, 2021	Apr. 30, 2025	Jan. 31, 2025	Apr. 30, 2024	Apr. 30, 2025	Apr. 30, 2024	Jul. 31, 2024	Jan. 31, 2024	Jul. 31, 2023
Class of Stock [Line Items]
Series A convertible preferred stock, shares authorized (in shares)							178,181			178,181		171,827
Series A convertible preferred stock, par value per share (in dollars per share)							$ 0.10			$ 0.10		$ 0.10
Convertible preferred stock, aggregate purchase price							$ 3,221,000			$ 96,700,000	$ 166,121,000
Issuance of convertible preferred stock (in shares)					100,000	100,000	2,917			178,181	166,121
Warrant liability										$ 113,000		$ 710,000
Warrant liability, non-cash expense (benefit)							$ (130,000)			(597,000)
Initial estimated fair value and carrying value of combined embedded derivatives		$ 38,832,000
Less: Carrying value of combined embedded derivatives at April 30, 2025										29,589,000
Convertible preferred stock, embedded derivatives, non-cash expense							$ (40,145,000)			$ (9,243,000)
Preferred stock, par value (in dollars per share)							$ 0.10			$ 0.10		$ 0.10
Shares issued upon conversion (in shares)				115,721.22
Proceeds from issuance of convertible preferred stock										$ 0	$ 43,200,000
Expense reimbursement				$ 1,800,000
Temporary equity, shares outstanding (in shares)							178,181	175,264	166,121	178,181	166,121	171,827	166,121	100,000
Warrant, term							5 years 6 months			5 years 6 months
Current redemption value							$ 170,072,000			$ 170,072,000		$ 180,076,000
Convertible preferred stock, accrued dividends							1,486,000			1,486,000		1,341,000
Redemption value of Series B-3 Convertible Preferred Stock at April 30, 2025										199,661,000		$ 180,076,000
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends)							(44,534,000)	$ (32,251,000)	$ (3,835,000)	(76,785,000)	$ (11,992,000)
Convertible Preferred Stock
Class of Stock [Line Items]
Liquidation preference per share (in dollars per share)	$ 7.99
Series A convertible preferred stock, shares authorized (in shares)	50,000,000
Series A convertible preferred stock, par value per share (in dollars per share)						$ 0.10
Dividend rate, in cash	7.75%
Dividend rate	6.50%
Preferred stock redemption rate	50.00%
Stock price change period		30 days
Disposition of business, maximum fair value	$ 75,000,000
Disposition of business, maximum fair value, ca satisfaction	$ 20,000,000
Convertible Preferred Stock | IPO
Class of Stock [Line Items]
Convertible preferred stock, aggregate purchase price						$ 100,000,000
Series B Preferred Stock
Class of Stock [Line Items]
Conversion rate	150.00%
Shares issued and sold (in shares)				45,000
Preferred stock, par value (in dollars per share)				$ 0.10
Shares issued during period, value				$ 45,000,000
Shares issued, price per shares (usd per share)				$ 1,000
Shares, issued (in shares)				5,400
Proceeds from issuance of convertible preferred stock				$ 43,200,000
Temporary equity, shares outstanding (in shares)			166,121.22
Dividend rate, percent	9.00%
Liquidation rate	100.00%
Series A-1 Convertible Preferred Stock
Class of Stock [Line Items]
Series A convertible preferred stock, par value per share (in dollars per share)					$ 0.10
Issuance of convertible preferred stock (in shares)				100,000	100,000
Liquidation preference per share (usd per share)					$ 1,134.2
Series B-1 Convertible Preferred Stock
Class of Stock [Line Items]
Series A convertible preferred stock, par value per share (in dollars per share)			$ 0.10
Issuance of convertible preferred stock (in shares)			5,705.83
Temporary equity, stock issued during period, shares, exchanged (in shares)		171,827.05	166,121.22
Temporary equity, liquidation preference		$ 1,067.87	$ 1,036.58
Series B-2 Convertible Preferred Stock
Class of Stock [Line Items]
Issuance of convertible preferred stock (in shares)		3,436.53
Temporary equity, stock issued during period, shares, exchanged (in shares)	175,263.58	171,827.05
Temporary equity, liquidation preference	$ 1,104.48
Preferred stock, convertible, conversion price (in dollars per share)		$ 0.10
Initial estimated fair value of Series B-2 Convertible Preferred Stock		$ 132,310,000
Convertible preferred stock, accrued dividends							$ 1,486,000			1,486,000
Redemption value of Series B-3 Convertible Preferred Stock at April 30, 2025										$ 199,661,000
Series B-3 Convertible Preferred Stock
Class of Stock [Line Items]
Issuance of convertible preferred stock (in shares)	2,916.76
Temporary equity, stock issued during period, shares, exchanged (in shares)	175,263.58
Preferred stock, convertible, conversion price (in dollars per share)	$ 0.10
Amendment fees	$ 650,000