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Note 10 - Earnings Per Share - Antidilutive Securities Excluded From Computation of Earnings Per Share (Details) - shares shares in Thousands	12 Months Ended
	Mar. 31, 2023	Mar. 31, 2022	Mar. 31, 2021
Total stock awards excluded from diluted EPS (in shares)	810	674	666
Assumed Conversion of Convertible Debt [Member]
Total stock awards excluded from diluted EPS (in shares)	608	608	608
Stock Awards that were Antidilutive [Member]
Total stock awards excluded from diluted EPS (in shares)	154	40	44
Stock Awards Subject to Performance Conditions [Member]
Total stock awards excluded from diluted EPS (in shares)	48	26	14

X

- Definition

Securities (including those issuable pursuant to contingent stock agreements) that could potentially dilute basic earnings per share (EPS) or earnings per unit (EPU) in the future that were not included in the computation of diluted EPS or EPU because to do so would increase EPS or EPU amounts or decrease loss per share or unit amounts for the period presented.

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 260
-SubTopic 10
-Name Accounting Standards Codification
-Section 50
-Paragraph 1
-Subparagraph (c)
-Publisher FASB
-URI https://asc.fasb.org//1943274/2147482662/260-10-50-1

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