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Note 6 - Goodwill and Other Intangibles - Intangible Assets (Details) - USD ($) $ in Thousands | 9 Months Ended |
--- | --- | ---
Dec. 31, 2021 | Mar. 31, 2021
Accumulated Amortization | $ (6,096) | $ (4,117)
Net Book Value | 10,155 |
Intangible assets, gross amount | 18,051 | 13,270
Intangible assets, net | 11,955 | 9,153
Trade Names [Member] |  |
Trade name | 1,800 | 600
Backlog [Member] |  |
Gross Amount | 681 | 600
Accumulated Amortization | (614) | (475)
Net Book Value | $ 67 | 125
Estimated Useful Life (Year) | 2 years |
Customer Relationships [Member] |  |
Gross Amount | $ 9,600 | 6,100
Accumulated Amortization | (2,217) | (739)
Net Book Value | $ 7,383 | 5,361
Estimated Useful Life (Year) | 7 years |
Core Technology and Know-how [Member] |  |
Gross Amount | $ 5,970 | 5,970
Accumulated Amortization | (3,265) | (2,903)
Net Book Value | $ 2,705 | $ 3,067
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. + References No definition available. + Details
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- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. + References Reference 1: http://www.xbrl.org/2003/role/disclosureRef -Publisher FASB -Name Accounting Standards Codification -Topic 928 -SubTopic 340 -Section 50 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6473545&loc=d3e61844-108004 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 2 -Subparagraph (a)(1) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 + Details
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