The equity instruments other than options, grants in period, grant date fair value.

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Award cliff vesting period.

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Maximum number of shares that may be issued on the exercise of incentive stock options.

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Number of additional shares allowable under the plan.

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No definition available.

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The number of period for automatic increase of shares in share-based compensation arrangement.

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No definition available.

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

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Amount of cost not yet recognized for nonvested award under share-based payment arrangement.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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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.

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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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The number of grants made during the period on other than stock (or unit) option plans (for example, phantom stock or unit plan, stock or unit appreciation rights plan, performance target plan).

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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The number of equity-based payment instruments, excluding stock (or unit) options, that vested during the reporting period.

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Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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Gross number of share options (or share units) granted during the period.

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Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
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Maximum number of shares that may be issued in accordance with the plan as a proportion of outstanding capital stock.

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Purchase price of common stock expressed as a percentage of its fair value.

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Note 8 - Stock-Based Compensation (Details Textual) - USD ($) $ in Millions		1 Months Ended		3 Months Ended		6 Months Ended
	Sep. 30, 2021	Mar. 31, 2025	Sep. 30, 2021	Jun. 30, 2026	Jun. 30, 2025	Jun. 30, 2026	Jun. 30, 2025
Share-Based Compensation Arrangement by Share-Based Payment Award, Options, Grants in Period, Gross (in shares)				0	0	0	0
Share-Based Payment Arrangement, Expense				$ 2.0	$ 0.4	$ 2.4	$ 0.8
Share-Based Payment Arrangement, Option [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount				0.3		$ 0.3
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)						11 months 8 days
Restricted Stock Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)						2,423,569
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)						465,657
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount				$ 14.4		$ 14.4
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)						3 years 9 months 29 days
Restricted Stock Units (RSUs) [Member] \| Dr Carlsten [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)						1,532,379
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period (in shares)						255,397
Restricted Stock Units (RSUs) [Member] \| Share-Based Payment Arrangement, New Employees [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)				4 years
Share-Based Compensation Arrangement By Share-Based Payment Award, Award Cliff Vesting Period (Year)						1 year
Restricted Stock Units (RSUs) [Member] \| Share-Based Payment Arrangement, Existing Employees [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)						3 years
PSUs with Performance Conditions [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period (in shares)		50,000
Share Based Compensation Arrangement by Share Based Payment Award, Equity Instruments Other Than Options, Grants in Period, Grant Date Fair Value		$ 0.3
The 2021 Equity Incentive Plan [Member]
Share-Based Compensation Arrangement By Share-based Payment Award, Period for Automatic Increase of Shares (Year)	10 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Percentage of Outstanding Stock Maximum			4.00%
Share-Based Compensation Arrangement By Share-based Payment Award, Maximum Number of Shares Available for Issue on the Exercise of Incentive Stock Options (in shares)	100,000,000		100,000,000
The 2021 Employee Stock Purchase Plan [Member] \| Share-Based Payment Arrangement, Option [Member]
Share-Based Compensation Arrangement By Share-based Payment Award, Period for Automatic Increase of Shares (Year)			10 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Percentage of Outstanding Stock Maximum			1.00%
Share-Based Compensation Arrangement By Share-Based Payment Award, Number of Additional Shares Allowable Under the Plan (in shares)	142,500		142,500
The 2021 Employee Stock Purchase Plan [Member] \| Share-Based Payment Arrangement, Option [Member] \| Common Class A [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Purchase Price of Common Stock, Percent			85.00%