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Note 17 - Business Segments (Tables)

6 Months Ended

Sep. 30, 2022

Notes Tables

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

		Three Months Ended September 30,								Six Months Ended September 30,
		2022				2021				2022				2021
Revenues:
Grid		$	25,698			$	24,619			$	45,527			$	48,119
Wind			1,982				3,289				4,833				5,209
Total		$	27,680			$	27,908			$	50,360			$	53,328

		Three Months Ended September 30,								Six Months Ended September 30,
		2022				2021				2022				2021
Operating loss:
Grid		$	(6,495	)		$	(5,836	)		$	(13,776	)		$	(11,180	)
Wind			(868	)			205				(1,254	)			(558	)
Unallocated corporate expenses			(729	)			1,329				(1,931	)			(63	)
Total		$	(8,092	)		$	(4,302	)		$	(16,961	)		$	(11,801	)

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

		September 30, 2022				March 31, 2022
Grid		$	121,227			$	114,053
Wind			9,716				9,866
Corporate assets			40,804				49,968
Total		$	171,747			$	173,887

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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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