Annual report pursuant to Section 13 and 15(d)

Note 10 - Share-based Compensation - Schedule of Share-based Compensation Expense Based on Fair Value of Options (Details)

v3.8.0.1
Note 10 - Share-based Compensation - Schedule of Share-based Compensation Expense Based on Fair Value of Options (Details) - $ / shares
12 Months Ended
Dec. 31, 2017
Dec. 31, 2016
Expected volatility   35.00%
Risk free interest rate   0.69%
Expected lives at date of grant (Year) 3 years 339 days 5 years 3 days
Weighted average fair value of options granted (in dollars per share) $ 2.09 $ 2.76
Minimum [Member]    
Expected volatility 30.00%  
Risk free interest rate 0.69%  
Maximum [Member]    
Expected volatility 69.00%  
Risk free interest rate 2.05%