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Note 17 - Business Segments (Tables)

9 Months Ended

Dec. 31, 2022

Notes Tables

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

		Three Months Ended December 31,								Nine Months Ended December 31,
		2022				2021				2022				2021
Revenues:
Grid		$	20,809			$	25,050			$	66,337			$	73,169
Wind			3,072				1,749				7,904				6,957
Total		$	23,881			$	26,799			$	74,241			$	80,126

		Three Months Ended December 31,								Nine Months Ended December 31,
		2022				2021				2022				2021
Operating loss:
Grid		$	(7,064	)		$	(3,691	)		$	(20,840	)		$	(14,873	)
Wind			(924	)			(1,678	)			(2,178	)			(2,236	)
Unallocated corporate expenses			(1,221	)			989				(3,152	)			927
Total		$	(9,209	)		$	(4,380	)		$	(26,170	)		$	(16,182	)

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

		December 31, 2022				March 31, 2022
Grid		$	123,664			$	114,053
Wind			10,005				9,866
Corporate assets			31,403				49,968
Total		$	165,072			$	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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