Note 9 - Intangible Assets - Intangible Assets (Details) - Licensing Agreements [Member] - USD ($) $ in Thousands |
Mar. 31, 2020 |
Mar. 31, 2019 |
|---|---|---|
| Intangible asset, cost | $ 18,025 | $ 18,988 |
| Intangible asset, accumulated amortization | 13,781 | 12,602 |
| Intangible asset, net book value | $ 4,244 | $ 6,386 |
| X | ||||||||||
- Definition Accumulated amount of amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount before amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Definition Amount after amortization of assets, excluding financial assets and goodwill, lacking physical substance with a finite life. Reference 1: http://www.xbrl.org/2003/role/disclosureRef
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| X | ||||||||||
- Details
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