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Note 8 - Intangible Assets (Details) - USD ($)
12 Months Ended
Dec. 31, 2015
Dec. 31, 2014
Developed Technology Rights [Member]    
Gross Value $ 16,700,000  
Current Period Completed Projects 400,000  
Accumulated Currency Translation Adjustment 3,215,000  
Accumulated Currency Translation Adjustment (5,926,000)  
Net Book Value 7,959,000 $ 9,410,000
Useful Life   15 years
In Process Research and Development [Member]    
Gross Value 5,503,000  
Current Period Completed Projects (400,000)  
Accumulated Currency Translation Adjustment 1,307,000  
Net Book Value 3,099,000 $ 4,653,000
Abandonments (697,000)  
Distribution Rights [Member]    
Gross Value 4,700,000  
Accumulated Currency Translation Adjustment 415,000  
Accumulated Currency Translation Adjustment (4,285,000)  
Useful Life   5 years
Patents [Member]    
Gross Value 1,000,000  
Accumulated Currency Translation Adjustment 194,000  
Accumulated Currency Translation Adjustment (333,000)  
Net Book Value 473,000 $ 581,000
Useful Life   16 years
Elevess Trade Name [Member]    
Gross Value 1,000,000  
Accumulated Currency Translation Adjustment (875,000)  
Net Book Value 125,000 $ 251,000
Useful Life   9 years
Gross Value 28,903,000  
Accumulated Currency Translation Adjustment 5,131,000  
Accumulated Currency Translation Adjustment (11,419,000)  
Net Book Value 11,656,000 $ 14,895,000
Abandonments $ (697,000)