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Note 17 - Business Segments (Tables)

6 Months Ended

Sep. 30, 2021

Notes Tables

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

		Three Months Ended September 30,								Six Months Ended September 30,
		2021				2020				2021				2020
Revenues:
Grid		$	24,619			$	16,347			$	48,119			$	34,062
Wind			3,289				4,770				5,209				8,267
Total		$	27,908			$	21,117			$	53,328			$	42,329

		Three Months Ended September 30,								Six Months Ended September 30,
		2021				2020				2021				2020
Operating Income (loss):
Grid		$	(5,836	)		$	(1,374	)		$	(11,180	)		$	(2,562	)
Wind			205				(983	)			(558	)			(2,103	)
Unallocated corporate gain (expenses)			1,329				(849	)			(63	)			(1,758	)
Total		$	(4,302	)		$	(3,206	)		$	(11,801	)		$	(6,423	)

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

		September 30, 2021				March 31, 2021
Grid		$	118,503			$	81,253
Wind			8,221				6,098
Corporate assets			57,649				81,515
Total		$	184,373			$	168,866

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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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