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Note 20 - Subsequent Events (Details) - USD ($)
1 Months Ended 3 Months Ended
Jul. 01, 2018
Apr. 13, 2018
Apr. 19, 2018
Feb. 20, 2018
Mar. 31, 2018
Apr. 06, 2018
Dec. 31, 2017
Common stock, par value         $ 0.001   $ 0.001
Blue Water Capital Funding              
Long-term debt         $ 2,920,000   $ 2,500,000
2018 Stock Option and Stock Award Plan              
Number of Shares Authorized         1,500,000    
Date of Vest Jul. 01, 2018     Jul. 01, 2018      
Fair Value Assumptions, Method Used Black-Scholes option-pricing model     Black-Scholes option-pricing model      
Risk-free interest rate 2.65%     2.65%      
Estimated volatility 119.27%     119.27%      
Dividend yield 0.00%     0.00%      
Expected life of the options 8 years     10 years      
NonEmployee Stock Option | 2018 Stock Option and Stock Award Plan              
Date of Vest         Jul. 01, 2018    
Fair Value Assumptions, Method Used         Black-Scholes option-pricing model    
Risk-free interest rate         2.77%    
Estimated volatility         141.02%    
Dividend yield         0.00%    
Expected life of the options         8 years    
Subsequent Event | Blue Water Capital Funding              
Long-term debt           $ 2,000,000  
Subsequent Event | LaRoseHoldingsLLLP | Securities Purchase Agreement | Investor              
Number of common stock issued   2,000,000          
Common stock, par value   $ 0.001          
Purchase price of common stock   $ 3,000,000          
Subsequent Event | NonEmployee Stock Option | 2018 Stock Option and Stock Award Plan              
Date of Vest     Jul. 01, 2018        
Shares issued     45,000        
Fair value of shares issued     $ 81,659        
Fair Value Assumptions, Method Used     Black-Scholes option-pricing model        
Risk-free interest rate     2.77%        
Estimated volatility     141.02%        
Dividend yield     0.00%        
Expected life of the options     8 years