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Note 17 - Business Segments (Tables)

9 Months Ended

Dec. 31, 2019

Notes Tables

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

		Three Months Ended December 31,								Nine Months Ended December 31,
		2019				2018				2019				2018
Revenues:
Grid		$	15,232			$	6,826			$	36,577			$	23,325
Wind			2,683				7,308				9,120				18,293
Total		$	17,915			$	14,134			$	45,697			$	41,618

		Three Months Ended December 31,								Nine Months Ended December 31,
		2019				2018				2019				2018
Operating (loss) income:
Grid		$	(3,732	)		$	(2,665	)		$	(9,723	)		$	(8,202	)
Wind			(2,297	)			24,269				(6,015	)			51,419
Unallocated corporate expenses			(590	)			(839	)			(1,236	)			(2,851	)
Total		$	(6,619	)		$	20,765			$	(16,974	)		$	40,366

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

		December 31, 2019				March 31, 2019
Grid		$	43,638			$	31,075
Wind			11,772				8,167
Corporate assets			68,081				80,088
Total		$	123,491			$	119,330

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