Share-Based Compensation, Annual Base Compensation Amount

No definition available.

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- Definition

Percentage of stock vested for share based compensation arrangement by share based payment award options during the period.

+ References

No definition available.

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- Definition

Share-Based Payment Arrangement, Option, Exercise Price, Percentage Of Fair Value Of Common Stock, Minimum

+ References

No definition available.

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- Definition

Share-based Compensation Arrangement by Share-based Payment Award, Term of Option to Purchase

+ References

No definition available.

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- Definition

Number of shares to purchase common stock option awards during the reporting period.

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No definition available.

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Number of shares to purchase of unregistered common stock option awards during the reporting period.

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No definition available.

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- Definition

Amount authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

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- Definition

Amount of expense for award under share-based payment arrangement. Excludes amount capitalized.

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- Definition

Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Weighted-average period over which cost not yet recognized is expected to be recognized for award under share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

+ References

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- Definition

Period over which grantee's right to exercise award under share-based payment arrangement is no longer contingent on satisfaction of service or performance condition, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Includes, but is not limited to, combination of market, performance or service condition.

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- Definition

Line items represent financial concepts included in a table. These concepts are used to disclose reportable information associated with domain members defined in one or many axes to the table.

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- Definition

The difference between the maximum number of shares (or other type of equity) authorized for issuance under the plan (including the effects of amendments and adjustments), and the sum of: 1) the number of shares (or other type of equity) already issued upon exercise of options or other equity-based awards under the plan; and 2) shares (or other type of equity) reserved for issuance on granting of outstanding awards, net of cancellations and forfeitures, if applicable.

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- Definition

The number of shares under options that were cancelled during the reporting period as a result of occurrence of a terminating event specified in contractual agreements pertaining to the stock option plan.

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- Definition

Gross number of share options (or share units) granted during the period.

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- Definition

The weighted average grant-date fair value of options granted during the reporting period as calculated by applying the disclosed option pricing methodology.

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Number of options outstanding, including both vested and non-vested options.

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Percentage of vesting of award under share-based payment arrangement.

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Period from grant to expiration date of share-based payment arrangement, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days.

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- Definition

Amount remaining authorized for purchase of share under share repurchase plan. Includes, but is not limited to, repurchase of stock and unit of ownership.

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Total cost of shares repurchased divided by the total number of shares repurchased.

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No definition available.

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Number of shares that have been repurchased during the period and are being held in treasury.

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Stock-based Payments - Narrative (Details) - USD ($)		3 Months Ended	12 Months Ended			37 Months Ended
Stock-based Payments - Narrative (Details) - USD ($)	Dec. 12, 2013	Jul. 31, 2025	Apr. 30, 2026	Apr. 30, 2025	Apr. 30, 2021	Apr. 30, 2026	Mar. 29, 2023	Mar. 01, 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense			$ 1,237,000	$ 654,000
Options granted outstanding (in shares)			2,639,820	1,678,682		2,639,820
Grants in period, weighted average grant date fair value (in dollars per share)			$ 4.10	$ 2.86
Shares granted (in shares)			1,205,272
Forfeited (in shares)			66,270
Share repurchase program, authorized amount							$ 5,000,000.0
Treasury stock (in shares)						120,300
Treasury stock approximate value						$ 708,000
Remaining repurchase amount			$ 4,300,000			4,300,000
Common Stock
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Treasury stock approximate value						$ 0
All Buy Back Amounts
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Treasury stock average price (in dollars per share)						$ 5.73
Income Statement Location [Axis]: us-gaap:CostOfGoodsAndServicesSold
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense			56,000	$ 105,000
Income Statement Location [Axis]: us-gaap:GeneralAndAdministrativeExpense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense			969,000	414,000
Income Statement Location [Axis]: us-gaap:ResearchAndDevelopmentExpense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense			134,000	10,000
Income Statement Location [Axis]: us-gaap:SellingAndMarketingExpense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense			$ 78,000	$ 125,000
Equity Incentive Plan 2021
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)			80,000			80,000
Expiration term of awards			10 years
Strike price as a percent of fair market value			100.00%
Options granted outstanding (in shares)			1,900,000			1,900,000
Equity Incentive Plan 2021 \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)			2,000,000			2,000,000
Equity Incentive Plan 2010
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)								0
Expiration term of awards			10 years
Strike price as a percent of fair market value			100.00%
Options granted outstanding (in shares)			732,000			732,000
Equity Incentive Plan 2010 \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Number of shares available for grant (in shares)			30,000,000			30,000,000
2023 Global Equity Incentive Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Expiration term of awards			10 years
Options granted outstanding (in shares)			300	0		300
Grants in period, weighted average grant date fair value (in dollars per share)			$ 1,364
Shares granted (in shares)		0	300	0
2023 Global Equity Incentive Plan \| Time-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense			$ 281,000			$ 281,000
Weighted average recognition period (in years)			2 years 21 days
2023 Global Equity Incentive Plan \| Share-Based Payment Arrangement, Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			25.00%
2023 Global Equity Incentive Plan \| Share-Based Payment Arrangement, Tranche Two
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting percentage			6.25%
2023 Global Equity Incentive Plan \| Share-Based Payment Arrangement, After Tranche One
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period			3 years
2023 Global Equity Incentive Plan \| Income Statement Location [Axis]: us-gaap:ResearchAndDevelopmentExpense
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Total stock-based compensation expense			$ 129,000
Director Compensation Plan
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vested percent	25.00%
Director Compensation Plan \| Independent Directors
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Vesting period					1 year
Term of option to purchase	5 years				10 years
Stock options award shares to purchase common stock (in shares)	8,333
Annual base compensation mount					$ 100,000
Director Compensation Plan \| Independent Directors \| Maximum \| Options and Cash
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual base compensation mount					35,000
Director Compensation Plan \| Board of Directors Chairman
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of option to purchase	5 years
Annual base compensation mount					150,000
Director Compensation Plan \| Chairperson of a Committee
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Term of option to purchase	5 years
Stock options award shares to purchase common stock (in shares)	16,667
Stock option award shares to purchase unregistered common stock (in shares)	1,667
Director Compensation Plan \| Chairperson of a Committee \| Maximum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual base compensation mount					120,000
Director Compensation Plan \| Chairperson of a Committee \| Minimum
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Annual base compensation mount					$ 110,000
2021 and 2010 Equity Incentive Plans
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense			4,100,000			4,100,000
2021 and 2010 Equity Incentive Plans \| Time-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense			2,100,000			2,100,000
2021 and 2010 Equity Incentive Plans \| Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Unrecognized stock-based compensation expense			$ 2,000,000.0			$ 2,000,000.0
2021 and 2010 Equity Incentive Plans \| Subject to Forfeiture \| Performance Shares
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Forfeited (in shares)			490,000
2021 and 2010 Equity Incentive Plans \| Maximum \| Time-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average recognition period (in years)			2 years 6 months 29 days
2021 and 2010 Equity Incentive Plans \| Minimum \| Time-Based Awards
Share-based Compensation Arrangement by Share-based Payment Award [Line Items]
Weighted average recognition period (in years)			1 year 9 months 18 days