Note 6  Stock Plans and Stock Based Compensation (Details)  BlackScholes Valuation Model Assumptions (USD $)

9 Months Ended  

Sep. 30, 2014

Sep. 30, 2014
Director Stock Options [Member]

Sep. 30, 2013
Employee Stock Option [Member]


Note 6  Stock Plans and Stock Based Compensation (Details)  BlackScholes Valuation Model Assumptions [Line Items]  
Weightedaverage fair value per share (in Dollars per share)  $ 2.88  $ 2.73  $ 1.96  
Risk free interest rate (1)  1.91%  ^{[1]}  2.63%  ^{[1]}  2.92%  ^{[1]}  
Expected volatility of stock (2)  61.84%  ^{[2]}  59.59%  ^{[2]}  58.88%  ^{[2]}  
Expected option life (3) (years)  6 years  ^{[3]}  10 years  ^{[3]}  10 years  ^{[3]}  

X  
 Details

X  
 Definition
Represents weighted average fair value per share assumption used in valuing an instrument. No definition available.

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  
 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
