Quarterly report pursuant to Section 13 or 15(d)

Note 9 - Patents (Details Textual)

v3.8.0.1
Note 9 - Patents (Details Textual)
3 Months Ended
Jul. 13, 2017
USD ($)
shares
Jul. 13, 2017
EUR (€)
shares
Mar. 31, 2018
USD ($)
Mar. 31, 2017
USD ($)
Dec. 31, 2017
USD ($)
Amortization of Intangible Assets, Total     $ 237,366 $ 17,682  
Finite-Lived Intangible Assets, Amortization Expense, Remainder of Fiscal Year     927,000    
Finite-Lived Intangible Assets, Amortization Expense, Year Two     920,000    
Finite-Lived Intangible Assets, Amortization Expense, Year Three     259,000    
Finite-Lived Intangible Assets, Amortization Expense, Year Four     39,000    
Finite-Lived Intangible Assets, Amortization Expense, Year Five     39,000    
APAD Octrooi B.V. and APAD B.V. [Member]          
Stock Issued During Period, Shares, Purchase of Assets | shares 1,646,358 1,646,358      
Stock Issued During Period, Value, Purchase of Assets $ 2,486,000        
Asset Purchase Agreement, Post-closing Adjustments, Percentage of Initial Shares, Maximum 25.00% 25.00%      
Asset Purchase Agreement, Post-closing Adjustments, Amount of Initial Shares, Maximum | €   € 250,000      
Asset Purchase Agreement, Post-closing Adjustments, Liabilities     $ 295,000   $ 295,000
Patents [Member]          
Finite-Lived Intangible Asset, Useful Life 3 years 3 years      
Finite-lived Intangible Assets Acquired $ 2,639,000        
Patents [Member] | Minimum [Member]          
Finite-Lived Intangible Asset, Useful Life     3 years    
Patents [Member] | Maximum [Member]          
Finite-Lived Intangible Asset, Useful Life     20 years    
Patents [Member] | Weighted Average [Member]          
Finite-Lived Intangible Asset, Useful Life     5 years