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Note 16 - Stockholders' Equity - Components of Employee Stock-based Compensation (Details) - USD ($) $ in Thousands	12 Months Ended
	Mar. 31, 2024	Mar. 31, 2023
Stock-based compensation expense	$ 4,652	$ 4,729
Share-Based Payment Arrangement, Option [Member]
Stock-based compensation expense	40	32
Restricted Stock [Member]
Stock-based compensation expense	4,563	4,656
Awards by Employee Stock Purchase Plan [Member]
Stock-based compensation expense	$ 49	$ 41

X

- Definition

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

+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Topic 718
-SubTopic 10
-Name Accounting Standards Codification
-Section S99
-Paragraph 1
-Subparagraph (SAB Topic 14.F)
-Publisher FASB
-URI https://asc.fasb.org/1943274/2147479830/718-10-S99-1

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

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X

- Details

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- Details

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- Details

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