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Note 6 - Intangible Assets - Summary of Intangible Assets (Details) - USD ($) $ in Thousands | 12 Months Ended |
--- | --- | ---
Dec. 31, 2020 | Mar. 31, 2021
Gross value |  | $ 112,736
Accumulated Currency Translation Adjustment |  | (3,088)
Accumulated Amortization |  | (20,662)
Net book value | $ 91,157 | 88,986
Useful life (Year) | 13 years |
Developed Technology Rights [Member] |  |
Gross value |  | 89,580
Accumulated Currency Translation Adjustment |  | (1,539)
Accumulated Amortization |  | (13,510)
Net book value | $ 75,899 | 74,531
Useful life (Year) | 15 years |
In Process Research and Development [Member] |  |
Gross value |  | 3,256
Accumulated Currency Translation Adjustment |  | (951)
Accumulated Amortization |  | 0
Net book value | $ 2,587 | 2,305
Customer Relationships [Member] |  |
Gross value |  | 9,000
Accumulated Currency Translation Adjustment |  | 0
Accumulated Amortization |  | (1,052)
Net book value | $ 8,173 | 7,948
Useful life (Year) | 10 years |
Distribution Rights [Member] |  |
Gross value |  | 4,700
Accumulated Currency Translation Adjustment |  | (415)
Accumulated Amortization |  | (4,285)
Net book value | $ 0 | 0
Useful life (Year) | 5 years |
Patents [Member] |  |
Gross value |  | 1,000
Accumulated Currency Translation Adjustment |  | (183)
Accumulated Amortization |  | (594)
Net book value | $ 259 | 223
Useful life (Year) | 16 years |
Trade Names [Member] |  |
Gross value |  | 5,200
Accumulated Currency Translation Adjustment |  | 0
Accumulated Amortization |  | (1,221)
Net book value | $ 4,239 | $ 3,979
Useful life (Year) | 5 years |

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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 Sum of the carrying amounts of all intangible assets, excluding goodwill, as of the balance sheet date, net of accumulated amortization and impairment charges. + References Reference 1: 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),(b)) -URI http://asc.fasb.org/extlink&oid=66006027&loc=d3e16323-109275 Reference 2: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 350 -SubTopic 30 -Section 45 -Paragraph 1 -URI http://asc.fasb.org/extlink&oid=6388964&loc=d3e16212-109274 + Details
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