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Note 5 - Goodwill and Other Intangibles - Intangible Assets (Details) - USD ($) $ in Thousands	Jun. 30, 2024	Mar. 31, 2024
Accumulated Amortization	$ (12,094)	$ (11,682)
Net Book Value	4,157
Intangible assets, gross amount	18,051	18,051
Intangible assets, net	5,957	6,369
Trade Names [Member]
Trade name and trademarks	1,800	1,800
Backlog [Member]
Gross Amount	681	681
Accumulated Amortization	(681)	(681)
Net Book Value	$ 0	0
Estimated Useful Life (Year)	2 years
Customer Relationships [Member]
Gross Amount	$ 9,600	9,600
Accumulated Amortization	(6,941)	(6,649)
Net Book Value	$ 2,659	2,951
Estimated Useful Life (Year)	7 years
Core Technology and Know-how [Member]
Gross Amount	$ 5,970	5,970
Accumulated Amortization	(4,472)	(4,352)
Net Book Value	$ 1,498	$ 1,618
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

X

- Definition

Useful life of finite-lived intangible assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days.

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