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Convertible Preferred Stock (Details) - USD ($) |  |  |  |  |  |  | 3 Months Ended | 12 Months Ended |
--- | --- | --- | --- | --- | --- | --- | --- | --- | ---
Mar. 03, 2025 | Oct. 17, 2024 | Jun. 17, 2024 | Jan. 22, 2024 | Dec. 13, 2023 | Oct. 19, 2021 | Jul. 31, 2025 | Jul. 31, 2025 | Jul. 31, 2024 | Jul. 31, 2023 | Jul. 31, 2022
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 |  |  |  |  |  |  |  | $ 96,700,000 | $ 172,035,000 |  |
Issuance of convertible preferred stock (in shares) |  |  |  |  | 100,000 | 100,000 |  | 178,181 | 171,827 |  |
Warrant liability |  |  |  |  |  |  |  | $ 234,000 | $ 710,000 |  |
Warrant liability, non-cash expense (benefit) |  |  |  |  |  |  |  | (476,000) | $ (5,730,000) |  |
Initial estimated fair value and carrying value of combined embedded derivatives |  | $ 38,832,000 |  |  |  |  |  |  |  |  |
Less: Carrying value of combined embedded derivatives at July 31, 2025 |  |  |  |  |  |  |  | 14,608,000 |  |  |
Convertible preferred stock, embedded derivatives, non-cash expense |  |  |  |  |  |  |  | $ (24,224,000) |  |  |
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 | $ 0 |
Expense reimbursement |  |  |  | $ 1,800,000 |  |  |  |  |  |  |
Temporary equity, shares outstanding (in shares) |  |  |  |  |  |  | 178,181 | 178,181 | 171,827 | 100,000 | 100,000
Warrant, term |  |  |  |  |  |  | 5 years 6 months | 5 years 6 months |  |  |
Current redemption value |  |  |  |  |  |  | $ 189,545,000 | $ 189,545,000 | $ 180,076,000 |  |
Convertible preferred stock, accrued dividends |  |  |  |  |  |  | 1,520,000 | 1,520,000 | 1,341,000 |  |
Redemption value of Series B-3 Convertible Preferred Stock at July 31, 2025 |  |  |  |  |  |  |  | 204,153,000 | 180,076,000 |  |
Adjustment to reflect redemption value of convertible preferred stock (including accrued dividends) |  |  |  |  |  |  | (96,258,000) | (96,258,000) | $ (15,900,000) | $ (7,007,000) |
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 | 1.5 |  |  |  |  |  |  |  |  |  |
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 | 1.0 |  |  |  |  |  |  |  |  |  |
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 |  |  |  |  |  |  | $ 5,978,000 | 5,978,000 |  |  |
Redemption value of Series B-3 Convertible Preferred Stock at July 31, 2025 |  |  |  |  |  |  |  | $ 204,153,000 |  |  |
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 |  |  |  |  |  |  |  |  |  |

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- Definition Amount of decrease to net income for accretion of temporary equity to its redemption value to derive net income apportioned to common stockholders. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479857/480-10-S50-3 Reference 2: http://www.xbrl.org/2003/role/disclosureRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S45 -Paragraph 3 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479887/480-10-S45-3 Reference 3: http://www.xbrl.org/2003/role/disclosureRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 3A -Subparagraph (24)(d) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480244/480-10-S99-3A + Details
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- Definition The aggregate liquidation preference (or restrictions) of stock classified as temporary equity that has a preference in involuntary liquidation considerably in excess of the par or stated value of the shares. The liquidation preference is the difference between the preference in liquidation and the par or stated values of the share. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References No definition available. + Details
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- Definition The maximum number of securities classified as temporary equity that are permitted to be issued by an entity's charter and bylaws. Temporary equity is a security with redemption features that are outside the control of the issuer, is not classified as an asset or liability in conformity with GAAP, and is not mandatorily redeemable. Includes any type of security that is redeemable at a fixed or determinable price or on a fixed or determinable date or dates, is redeemable at the option of the holder, or has conditions for redemption which are not solely within the control of the issuer. If convertible, the issuer does not control the actions or events necessary to issue the maximum number of shares that could be required to be delivered under the conversion option if the holder exercises the option to convert the stock to another class of equity. If the security is a warrant or a rights issue, the warrant or rights issue is considered to be temporary equity if the issuer cannot demonstrate that it would be able to deliver upon the exercise of the option by the holder in all cases. Includes stock with put option held by ESOP and stock redeemable by holder only in the event of a change in control of the issuer. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Topic 480 -SubTopic 10 -Name Accounting Standards Codification -Section S50 -Paragraph 1 -Publisher FASB -URI https://asc.fasb.org/1943274/2147479857/480-10-S50-1 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Topic 210 -SubTopic 10 -Name Accounting Standards Codification -Section S99 -Paragraph 1 -Subparagraph (SX 210.5-02(27)(b)) -Publisher FASB -URI https://asc.fasb.org/1943274/2147480566/210-10-S99-1 + Details
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