Note 6 - Goodwill and Other Intangibles - Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2026	Mar. 31, 2026	Mar. 31, 2025
Gross Amount	$ 30,807		$ 30,698
BacklogAccumulated Amortization	(18,127)		(17,150)
Net Book Value	10,880
Intangible assets, net	12,680	$ 13,548	13,548
Trade Names [Member]
Indefinite life intangible assets	1,800		1,800
Backlog [Member]
Gross Amount	4,034		4,008
BacklogAccumulated Amortization	(2,542)		(2,038)
Net Book Value	$ 1,493		1,970
Estimated Useful Life (Year)	2 years
Customer Relationships [Member]
Gross Amount	$ 19,003		18,920
BacklogAccumulated Amortization	(10,146)		(9,795)
Net Book Value	$ 8,856		9,125
Customer Relationships [Member] \| Minimum [Member]
Estimated Useful Life (Year)	5 years
Customer Relationships [Member] \| Maximum [Member]
Estimated Useful Life (Year)	10 years
Core Technology and Know-how [Member]
Gross Amount	$ 5,970		5,970
BacklogAccumulated Amortization	(5,439)		(5,317)
Net Book Value	$ 531		$ 653
Core Technology and Know-how [Member] \| Minimum [Member]
Estimated Useful Life (Year)	5 years
Core Technology and Know-how [Member] \| Maximum [Member]
Estimated Useful Life (Year)	10 years
UNITED STATES
Intangible assets, net	$ 4,264	4,567
BRAZIL
Intangible assets, net	$ 8,416	$ 8,981

Useful life of finite-lived intangible asset, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents reported fact of one year, five months, and thirteen days. Excludes goodwill and capitalized cost for software to be sold, leased, or marketed.

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