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Note 20 - Business Segments (Tables)

12 Months Ended

Mar. 31, 2025

Notes Tables

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

		Fiscal Year Ended March 31, 2025
		Grid				Wind				Unallocated				Total
Segment operating income:
Revenues		$	187,170			$	35,648			$	-			$	222,818
Less (a)
Segment other operating expenses (b)			185,358				31,856				6,681				223,895
Segment operating income (loss)		$	1,812			$	3,792			$	(6,681	)		$	(1,077	)

		Fiscal Year Ended March 31, 2024
		Grid				Wind				Unallocated				Total
Segment operating income:
Revenues		$	122,065			$	23,574			$	-			$	145,639
Less (a)
Segment other operating expenses (b)			128,974				23,125				4,908				157,007
Segment operating income (loss)		$	(6,909	)		$	449			$	(4,908	)		$	(11,368	)

		Fiscal Years Ended March 31,
		2025				2024
Operating loss:		$	(1,077	)		$	(11,368	)
Interest income, net			3,708				1,302
Other expense			(265	)			(736	)
Income (loss) before taxes		$	2,366			$	(10,802	)

		Fiscal Years Ended March 31,
		2025				2024
Grid		$	5,468			$	4,408
Wind			92				87
Total		$	5,560			$	4,495

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

		March 31, 2025				March 31, 2024
Grid		$	211,520			$	125,878
Wind			13,697				14,733
Corporate assets			85,304				92,160
Total		$	310,521			$	232,771

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

		March 31,
		2025				2024
North America		$	37,426			$	10,679
Europe			1,097				149
Asia Pacific			49				33
Total		$	38,572			$	10,861

X

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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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