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Note 9 - Intangible Assets - Summary of Intangible Assets (Details) - USD ($)
$ in Thousands
9 Months Ended
Sep. 30, 2017
Dec. 31, 2016
Gross Value $ 28,206  
Accumulated Currency Translation Adjustment (4,278)  
Accumulated Amortization (13,190)  
Intangible assets, net 10,738 $ 10,227
In Process Research and Development [Member]    
Gross Value 4,406  
Accumulated Currency Translation Adjustment (1,061)  
Intangible assets, net 3,345 2,973
Developed Technology Rights [Member]    
Gross Value $ 17,100  
Useful Life (Year) 15 years  
Accumulated Currency Translation Adjustment $ (2,644)  
Accumulated Amortization (7,487)  
Intangible assets, net 6,969 6,842
Distribution Rights [Member]    
Gross Value $ 4,700  
Useful Life (Year) 5 years  
Accumulated Currency Translation Adjustment $ (415)  
Accumulated Amortization (4,285)  
Intangible assets, net
Patents [Member]    
Gross Value $ 1,000  
Useful Life (Year) 16 years  
Accumulated Currency Translation Adjustment $ (158)  
Accumulated Amortization (418)  
Intangible assets, net 424 412
Elevess Trade Name [Member]    
Gross Value $ 1,000  
Useful Life (Year) 9 years  
Accumulated Currency Translation Adjustment  
Accumulated Amortization (1,000)  
Intangible assets, net