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Note 10 - Stock-Based Compensation (Details) (USD $)
 12 Months Ended 1 Months Ended 12 Months Ended
Dec. 31, 2013
Dec. 31, 2012
Dec. 31, 2011
Dec. 31, 2006
Incentive Stock Options (ISO's) [Member]
2006 Equity Incentive Plan [Member]
Dec. 31, 2013
Non-Employee Share-Based Compensation [Member]
Oct. 30, 2013
General and Administrative Expense [Member]
Dec. 31, 2013
General and Administrative Expense [Member]
Dec. 31, 2012
General and Administrative Expense [Member]
Dec. 31, 2011
General and Administrative Expense [Member]
Dec. 31, 2013
2006 Equity Incentive Plan [Member]
Dec. 31, 2012
2006 Equity Incentive Plan [Member]
Dec. 31, 2011
2006 Equity Incentive Plan [Member]
Dec. 31, 2006
2006 Equity Incentive Plan [Member]
Note 10 - Stock-Based Compensation (Details) [Line Items]                          
Share-based Compensation Arrangement by Share-based Payment Award, Purchase Price of Common Stock, Percent       110.00%                  
Share-based Compensation Arrangement by Share-based Payment Award, Expiration Period                         10 years
Share-based Compensation Arrangement by Share-based Payment Award, Award Vesting Period                         3 years
Share-based Compensation Arrangement by Share-based Payment Award, Number of Shares Authorized (in Shares)                         1,200,000
Allocated Share-based Compensation Expense $ 143,435 $ 310,076 $ 463,752     $ 20,500 $ 101,896 $ 231,936 $ 284,352 $ 143,435 $ 310,076 $ 463,752  
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized         0         196,648      
Employee Service Share-based Compensation, Nonvested Awards, Compensation Cost Not yet Recognized, Period for Recognition                   2 years 73 days      
Share-based Goods and Nonemployee Services Transaction, Stockholders' Equity             $ 20,500 $ 0 $ 7,119