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Note 18 - Business Segments - Total Business Segments Assets (Details) - USD ($) $ in Thousands	Dec. 31, 2023	Mar. 31, 2023
Total assets	$ 166,343	$ 175,561
Operating Segments [Member] | Grid [Member]
Total assets	128,395	135,296
Operating Segments [Member] | Wind [Member]
Total assets	12,933	14,361
Corporate, Non-Segment [Member]
Total assets	$ 25,015	$ 25,904

X

- Definition

Sum of the carrying amounts as of the balance sheet date of all assets that are recognized. Assets are probable future economic benefits obtained or controlled by an entity as a result of past transactions or events.

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