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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

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