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Note 21 - Business Segments (Tables)

12 Months Ended

Mar. 31, 2023

Notes Tables

Schedule of Segment Reporting Information, by Segment [Table Text Block]

		Fiscal Years Ended March 31,
		2023				2022
Revenues:
Grid		$	94,631			$	98,876
Wind			11,353				9,559
Total		$	105,984			$	108,435

		Fiscal Years Ended March 31,
		2023				2022
Operating income (loss):
Grid		$	(24,615	)		$	(20,725	)
Wind			(2,547	)			(1,554	)
Unallocated corporate expenses			(5,847	)			1,190
Total		$	(33,009	)		$	(21,089	)

Reconciliation of Assets from Segment to Consolidated [Table Text Block]

		March 31, 2023				March 31, 2022
Grid		$	135,296			$	114,053
Wind			14,361				9,866
Corporate assets			25,904				49,968
Total		$	175,561			$	173,887

Schedule of Revenue from External Customers and Long-Lived Assets, by Geographical Areas [Table Text Block]

		March 31,
		2023				2022
North America		$	12,125			$	13,446
Europe			141				166
Asia Pacific			43				44
Total		$	12,309			$	13,656

X

- Definition

Tabular disclosure of all significant reconciling items in the reconciliation of total assets from reportable segments to the entity's consolidated assets.

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