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Note 8 - Goodwill and Long-Lived Assets - Other Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Mar. 31, 2021 | Mar. 31, 2020
Carrying Amount | $ 176,866 | $ 169,123
Accumulated Amortization | (65,125) | (49,252)
Net | $ 111,741 | 119,871
Minimum [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 5 years |
Maximum [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 15 years |
Intellectual Property [Member] |  |
Carrying Amount | $ 21,201 | 15,731
Accumulated Amortization | (8,595) | (6,454)
Net | $ 12,606 | 9,277
Weighted average remaining life (Year) | 8 years 4 months 24 days |
Intellectual Property [Member] | Minimum [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 10 years |
Intellectual Property [Member] | Maximum [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 15 years |
Trade Names [Member] |  |
Carrying Amount | $ 8,612 | 5,839
Accumulated Amortization | (3,129) | (2,855)
Net | $ 5,483 | 2,984
Weighted average remaining life (Year) | 4 years 3 months 18 days |
Trade Names [Member] | Minimum [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 5 years |
Trade Names [Member] | Maximum [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 10 years |
Customer Relationships [Member] |  |
Carrying Amount | $ 145,754 | 146,106
Accumulated Amortization | (52,206) | (38,777)
Net | $ 93,548 | 107,329
Weighted average remaining life (Year) | 8 years 6 months |
Customer Relationships [Member] | Minimum [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 5 years |
Customer Relationships [Member] | Maximum [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 10 years |
Noncompete Agreements [Member] |  |
Carrying Amount | $ 1,299 | 1,447
Accumulated Amortization | (1,195) | (1,166)
Net | $ 104 | $ 281
Weighted average remaining life (Year) | 2 years |
Noncompete Agreements [Member] | Minimum [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 5 years |
Noncompete Agreements [Member] | Maximum [Member] |  |
Finite-Lived Intangible Asset, Useful Life (Year) | 10 years |

X
- Definition Weighted average amortization period of finite-lived intangible assets acquired either individually or as part of a group of assets, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 50 -Paragraph 1 -Subparagraph (a)(3) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16265-109275 + Details
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- 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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