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Note 5 - Goodwill and Intangible Assets, Net - Other Intangible Assets (Details) - USD ($) $ in Thousands | Jun. 30, 2021 | Mar. 31, 2020
--- | --- | ---
Carrying Amount | $ 178,945 | $ 176,866
Accumulated Amortization | (69,265) | (65,125)
Net | 109,680 | 111,741
Intellectual Property [Member] |  |
Carrying Amount | 21,440 | 21,201
Accumulated Amortization | (9,053) | (8,595)
Net | 12,387 | 12,606
Trade Names [Member] |  |
Carrying Amount | 8,702 | 8,612
Accumulated Amortization | (3,197) | (3,129)
Net | 5,505 | 5,483
Customer Relationships [Member] |  |
Carrying Amount | 147,504 | 145,754
Accumulated Amortization | (55,810) | (52,206)
Net | 91,694 | 93,548
Noncompete Agreements [Member] |  |
Carrying Amount | 1,299 | 1,299
Accumulated Amortization | (1,205) | (1,195)
Net | $ 94 | $ 104

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