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Note 2 - Summary of Significant Accounting Policies (Details Textual) - USD ($)
3 Months Ended 12 Months Ended
Sep. 30, 2014
Dec. 31, 2015
Dec. 31, 2014
Dec. 31, 2013
Machinery and Equipment [Member] | Minimum [Member]        
Property, Plant and Equipment, Useful Life   5 years    
Machinery and Equipment [Member] | Maximum [Member]        
Property, Plant and Equipment, Useful Life   15 years    
Software Development [Member] | Minimum [Member]        
Property, Plant and Equipment, Useful Life   3 years    
Software Development [Member] | Maximum [Member]        
Property, Plant and Equipment, Useful Life   7 years    
Goodwill, Impairment Loss $ 1,330,000 $ 0 $ 1,329,000 $ 0