Note 10  Sharebased Compensation  Schedule of Sharebased 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% 
X  
 Definition Agreedupon price for the exchange of the underlying asset relating to the sharebased payment award. No definition available.

X  
 Definition The estimated measure of the percentage by which a share price is expected to fluctuate during a period. Volatility also may be defined as a probabilityweighted measure of the dispersion of returns about the mean. The volatility of a share price is the standard deviation of the continuously compounded rates of return on the share over a specified period. That is the same as the standard deviation of the differences in the natural logarithms of the stock prices plus dividends, if any, over the period. Reference 1: http://www.xbrl.org/2003/role/presentationRef

X  
 Definition The riskfree interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://www.xbrl.org/2003/role/presentationRef

X  
 Definition Expected term of sharebased compensation awards, in 'PnYnMnDTnHnMnS' format, for example, 'P1Y5M13D' represents the reported fact of one year, five months, and thirteen days. Reference 1: http://www.xbrl.org/2003/role/presentationRef

X  
 Details

X  
 Details
