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Note 7 - Stockholders' Equity and Stock Incentive Plans (Details Textual) - USD ($) $ in Thousands	3 Months Ended		9 Months Ended	12 Months Ended
	Mar. 31, 2025	Mar. 31, 2024	Sep. 30, 2025	Dec. 31, 2024	Jul. 17, 2025	Dec. 05, 2024	May 09, 2024	May 04, 2023	Jun. 01, 2022	Oct. 21, 2021
Restricted Stock Units (RSUs) [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount			$ 12,200
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)			1 year 3 months 18 days
Performance Shares [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)			3 years
Share-Based Compensation Arrangement by Share-Based Payment Award, Shares Issued in Period (in shares)	147,970	241,277
Shares Issued Per Unit (in shares)	1.22	1.94
Share-Based Payment Arrangement, Shares Withheld for Tax Withholding Obligation (in shares)	55,433	94,862
Share Based Payment Arrangement, Shares Issued In Period, Net of Tax Withholdings (in shares)	92,537	146,415
Share-Based Compensation Arrangement by Share-Based Payment Award, Equity Instruments Other than Options, Vested in Period, Fair Value	$ 0	$ 800
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount			$ 3,000
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)			1 year 10 months 24 days
Career Shares [Member]
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Amount			$ 1,600
Share-Based Payment Arrangement, Nonvested Award, Cost Not yet Recognized, Period for Recognition (Year)			3 years 2 months 12 days
The 2021 Program [Member]
Stock Repurchase Program, Authorized Amount					$ 500,000	$ 500,000	$ 500,000	$ 500,000	$ 500,000	$ 300,000
Share Repurchase Program, Remaining Authorized, Amount			$ 547,400
The 2020 Plan [Member] | Restricted Stock Units (RSUs) [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Period (Year)			3 years	3 years
The 2020 Plan [Member] | Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Tranche One [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage			0.33%
The 2020 Plan [Member] | Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Tranche Two [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage			0.33%
The 2020 Plan [Member] | Restricted Stock Units (RSUs) [Member] | Share-Based Payment Arrangement, Tranche Three [Member]
Share-Based Compensation Arrangement by Share-Based Payment Award, Award Vesting Rights, Percentage			0.33%

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- Definition

Shares issued during the period net of tax withholding for share based payment arrangements

+ References

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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.

+ References

Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef
-Topic 505
-SubTopic 30
-Name Accounting Standards Codification
-Section 50
-Paragraph 4
-Publisher FASB
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- Definition

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+ References

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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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Number of shares used to settle grantee's tax withholding obligation for award under share-based payment arrangement.

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

+ References

No definition available.

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