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Note 17 - Business Segments - Total Business Segments Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2022	Mar. 31, 2022	Jun. 30, 2021
Total assets	$ 176,508	$ 173,887	$ 173,887
Operating Segments [Member] | Grid [Member]
Total assets	120,583		114,053
Operating Segments [Member] | Wind [Member]
Total assets	9,433		9,866
Corporate, Non-Segment [Member]
Total assets	$ 46,492		$ 49,968

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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