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Note 8 - Stockholders' Equity (Details Textual) - $ / shares shares in Thousands	3 Months Ended	6 Months Ended
	Sep. 30, 2024	Sep. 30, 2024	Jun. 30, 2024
Restricted Stock Units (RSUs) [Member] | Non-employee Directors [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)	1 year
The FY25 PSUs [Member] | Eligible Employees [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)	41	41
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized for Service and Company Financial Performance Conditions (in shares)		23
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value, Shares Subject to Service and Company Performance (in dollars per share)		$ 89.82
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized, Subject to Service and Market Conditions (in shares)		18
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Grants in Period, Weighted Average Grant Date Fair Value, Subject to Service and Market Conditions (in dollars per share)		$ 119.54
The FY25 PSUs [Member] | Eligible Employees [Member] | Minimum [Member]
Share-based Compensation Arrangement by Share-based Payment Award Number of Shares Issued Upon Vesting, Percentage		0.00%
The FY25 PSUs [Member] | Eligible Employees [Member] | Maximum [Member]
Share-based Compensation Arrangement by Share-based Payment Award Number of Shares Issued Upon Vesting, Percentage		200.00%
The 2021 Equity Plan [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Number of Shares Authorized (in shares)			660

X

- Definition

The weighted average fair value at grant date for nonvested equity-based awards issued 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), for shares subject to service and company financial performance.

+ References

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- Definition

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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.

+ References

Reference 1: http://www.xbrl.org/2003/role/exampleRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 2
-Subparagraph (a)(1)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147480429/718-10-50-2

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