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Note 5 - Goodwill and Intangible Assets, Net - Other Intangible Assets (Details) - USD ($) $ in Thousands	Sep. 30, 2020	Mar. 31, 2020
Carrying Amount	$ 174,006	$ 169,123
Accumulated Amortization	(57,303)	(49,252)
Net	116,703	119,871
Intellectual Property [Member]
Carrying Amount	20,852	15,731
Accumulated Amortization	(7,671)	(6,454)
Net	13,181	9,277
Trade Names [Member]
Carrying Amount	8,477	5,839
Accumulated Amortization	(2,992)	(2,855)
Net	5,485	2,984
Customer Relationships [Member]
Carrying Amount	143,378	146,106
Accumulated Amortization	(45,464)	(38,777)
Net	97,914	107,329
Noncompete Agreements [Member]
Carrying Amount	1,299	1,447
Accumulated Amortization	(1,176)	(1,166)
Net	$ 123	$ 281

X

- 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

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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
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+ References

Reference 1: http://www.xbrl.org/2003/role/disclosureRef
-Publisher FASB
-Name Accounting Standards Codification
-Topic 926
-SubTopic 20
-Section 50
-Paragraph 5
-URI http://asc.fasb.org/extlink&oid=120154696&loc=d3e54445-107959

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