Note 4  Capital Stock, Stock Plans and Stockbased Compensation  Blackscholes Valuation Model Assumptions (Details)  Employee Stock Option [Member]  The 2003 Outside Directors Stock Plan [Member] 
Jan. 13, 2017
$ / shares



Weightedaverage fair value per option (in dollars per share)  $ 2.63  
Risk free interest rate  2.40%  ^{[1]}  
Expected volatility of stock  56.32%  ^{[2]}  
Dividend yield  0.00%  
Expected option life (Year)  10 years  ^{[3]}  

X  
 Definition Agreedupon price for the exchange of the underlying asset relating to the sharebased payment award. 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://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

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
