Annual report pursuant to Section 13 and 15(d)

Note 2 - Summary of Significant Accounting Policies - Finite-lived Intangibles (Details)

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Note 2 - Summary of Significant Accounting Policies - Finite-lived Intangibles (Details)
12 Months Ended
Dec. 31, 2020
Patents and Technology [Member] | Minimum [Member]  
Intangible assets useful life (Year) 5 years
Patents and Technology [Member] | Maximum [Member]  
Intangible assets useful life (Year) 30 years
Trademarks [Member] | Minimum [Member]  
Intangible assets useful life (Year) 9 years
Trademarks [Member] | Maximum [Member]  
Intangible assets useful life (Year) 30 years
Licenses and Other Agreements [Member] | Minimum [Member]  
Intangible assets useful life (Year) 5 years
Licenses and Other Agreements [Member] | Maximum [Member]  
Intangible assets useful life (Year) 15 years
Other Intangible Assets [Member] | Minimum [Member]  
Intangible assets useful life (Year) 5 years
Other Intangible Assets [Member] | Maximum [Member]  
Intangible assets useful life (Year) 20 years