Note 9  Equity  Fair Value Assumptions of Options Granted (Details)  Employee Stock Option [Member] 
3 Months Ended  

Mar. 31, 2018 
Mar. 31, 2017 

Expected volatility  42.00%  
Expected dividends  0.00%  0.00% 
Expected term (years) (Year)  7 years  7 years 
Forfeiture rate  20.00%  20.00% 
Minimum [Member]  
Expected volatility  42.00%  
Riskfree rate  2.53%  2.10% 
Maximum [Member]  
Expected volatility  43.00%  
Riskfree rate  2.63%  2.14% 
X  
 Definition Represents the forfeiture rate in determine the fair value for the sharebased compensation. No definition available.

X  
 Definition The estimated dividend rate (a percentage of the share price) to be paid (expected dividends) to holders of the underlying shares over the option's term. Reference 1: http://fasb.org/usgaap/role/ref/legacyRef

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://fasb.org/usgaap/role/ref/legacyRef

X  
 Definition The riskfree interest rate assumption that is used in valuing an option on its own shares. Reference 1: http://fasb.org/usgaap/role/ref/legacyRef

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://fasb.org/usgaap/role/ref/legacyRef

X  
 Details

X  
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X  
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